Malicious PDF — malware analysis report

Static analysis result for SHA-256 012d8e3c22e4252d…

MALICIOUS

PDF

175.9 KB Created: 2021-07-13 21:58:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: d9e2c098528ed0dac9321257909bee77 SHA-1: db84d4d3f9bc428b8bc7e0534c8b03e1e327ae81 SHA-256: 012d8e3c22e4252d0218bcff285478a457ead71dacffb389410e9b8967909617
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal a link farm strategy, with multiple URIs pointing to compromised CMS uploads and disposable hosting, likely serving as a lure for users to download further malicious content. The presence of embedded URLs and the overall structure suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9652

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://chalappuram.com/userfiles/file/vabikanij.pdf In PDF document text
    • https://ltanimalpark.com/wp-content/plugins/super-forms/uploads/php/files/31857f052246ad149969fe8597401848/tevedurudaw.pdfIn PDF document text
    • https://windsbs.biz/files/file/votosepajivojaxa.pdfIn PDF document text
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/6aohmgg470os16fovgdkkkfud7/dipajaxibuwazivegenoxo.pdfIn PDF document text
    • https://genegurumiraclehealer.com/userfiles/file/migexuxugafipipepuloziwe.pdfIn PDF document text
    • http://aelma.com/sites/default/userfiles/file/99332355389.pdfIn PDF document text
    • http://blpest.com/UserFiles/file/juvubedinajibuxorazas.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd1a86ae8b---98413682294.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e5bb29f0940---19758054459.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3d44126328---bufizujez.pdfIn PDF document text
    • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/9lnesiaplp5tmdbsi8u51hjbjn/rugivoxubemar.pdfIn PDF document text
    • http://riceart.ir/basefile/files/2193208279.pdfIn PDF document text
    • http://newgrids.com/userfiles/file/tolobezapukesepatapagi.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-6-23/20210623141949665853.pdfIn PDF document text
    • http://galeriejacqueselbaz.com/userfiles/file/vatelujadelasurasozeromub.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/r09uaiffsod94nobq97pv20t4t/xugalifiguxag.pdfIn PDF document text
    • https://truck-diagnostic.ru/wp-content/plugins/super-forms/uploads/php/files/4c16aa6ef5c1bf0b51560fcde4e8284e/74036391185.pdfIn PDF document text
    • http://wawabed.pl/uploads/userfiles/file/78837886274.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/2hkm0qr6ftalsn3i27tpt8cnv7/fuzog.pdfIn PDF document text
    • https://matrainagycsalados.hu/userfiles/file/93621542857.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607951824d943---5060731849.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/f327f5d1aa990143879bc9c186ca91a6/23193315429.pdfIn PDF document text
    • https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/2dmsrcrcto569d7lobt4cotadv/lukepidulivukuxesonoritu.pdfIn PDF document text
    • https://readandenjoy.ae/userfiles/files/duvikajezananonudutuwum.pdfIn PDF document text
    • http://157.230.241.115/image/upload/File/85777863840.pdfPDF link annotation
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=first+t+in+ttpPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002393c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2393C 17852 bytes
SHA-256: 1284052c42cf57799ef1a694d84fc50b2ab82cfc838ed09e5be447d4e5d1a2a4
font_01_sfnt_off000253f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x253F7 18860 bytes
SHA-256: 603e2d3936db9c857119779c45bb0ee226f738179a0e56bdd6ca6e43052bad71
font_02_sfnt_off0002842d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2842D 9760 bytes
SHA-256: 817e9a4f5f70e8aa7e40541f301f35c3bdf427b235e3140098cd341cd448a571
font_03_sfnt_off0002998b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2998B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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