Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c8443332be1d66…

MALICIOUS

PDF

98.7 KB Created: 2021-08-01 19:10:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 62e6a9f08cef1d1b8f87a7ed93d63bc5 SHA-1: ee4fecb415d14c841dbbc5eedf096a5384f1b4d8 SHA-256: 68c8443332be1d66f8721a8c02c275be77256719f51d6222976c8743628f30dc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which point to websites hosted on compromised CMS platforms or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The 'utm_term' parameter in one URL suggests a lure, possibly related to movie downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9895

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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 https://wita.lt/images/files/tefusegovakupade.pdf In PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/c77aaf01cf2f34c0e516da0ec16880f2/14116412620.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e16e634479---folavune.pdfIn PDF document text
    • https://pima-alarms.rs/slicice/file/bitomufuw.pdfIn PDF document text
    • http://barrybusiness-crm.com/ressource/devis-photo/files/rasubojexisojumagoxed.pdfIn PDF document text
    • http://quanhoangtsi.com/upload/quangtri/files/gibivegon.pdfIn PDF document text
    • https://ristovski.mk/public_html/upload/userfiles/file/tozugipikajuzawudeneker.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098f9e58969d---80077673666.pdfIn PDF document text
    • https://www.delaneyllc.com/ckfinder/userfiles/files/tapolapipuzirizujiraxu.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/cnvaellt4d01m85icvlp5klnqo/27188870144.pdfIn PDF document text
    • http://kledingindex.nl/images/uploads/lejatoluwalififaxowov.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/fqsmrhhr185kcq17m3me46luh3/lijepebunuxa.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070d6df0988a---jarigigoxurekodalesaraf.pdfIn PDF document text
    • http://jucal.es/images/file/wusexezinoxizanilosu.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f89f20ef53---totux.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/75aa18d16b04912bf439b230063d6760/volurijolowojumaborul.pdfIn PDF document text
    • http://tribo.kz/userfiles/File/sapifafojigolilimefaxod.pdfIn PDF document text
    • http://coeb.eu/userfiles/files/48010097224.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b472d5be3c9---76884604789.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096932396197---59817204983.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/8780463090.pdfIn PDF document text
    • http://www.predia.cz/userfiles/file/tuvapojufixinuretixode.pdfIn PDF document text
    • https://kaptenhoki.com/contents//files/tamazotirimevulogibug.pdfIn PDF document text
    • http://ifa-astrologie.de/userfiles/file/47638019803.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=hacksaw+ridge+2016+hollywood+movie+hindi+dubbed+downloadPDF 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_off00010f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F34 11772 bytes
SHA-256: e51400c1d24479c22edaf5c720fa61eb3c94b84efc10c3855f4c267045bf6d29
font_01_sfnt_off00012b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B04 1700 bytes
SHA-256: 15171638d69c9281a983de8a04f8d213e5ed86d33053034f6aa0dd130c4010d8
font_02_sfnt_off00013317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13317 18464 bytes
SHA-256: 545f9ecf07dda7f6db894e2353a9e624b2584ade829b7dd5db631c2a29b347a8
font_03_sfnt_off00016294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16294 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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