Malicious PDF — malware analysis report

Static analysis result for SHA-256 0908010048eedae7…

MALICIOUS

PDF

85.0 KB Created: 2021-06-26 18:18:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: b7d7fccd71cd4170ee3d4f8a79799d2f SHA-1: 077e8fa842a9a421008a06d277c82ab27f99c41e SHA-256: 0908010048eedae79daab6159e4a1c6b3699981d7737f7348634f412e6a8364f
156 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users to malicious content. The presence of these links strongly suggests an attempt to lure victims to phishing sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/41f77f507f00128077f7342d0301b4bc/gusujadewumuwedos.pdf In PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/d7013d20bfa501b4b5818b9adf71fc0e/85606733590.pdfIn PDF document text
    • http://dblbtech.com/userfiles/file/dejujuvatin.pdfIn PDF document text
    • http://ceraunavoltapizzeria.it/userfiles/files/84365733006.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16074fea890622---17967581296.pdfIn PDF document text
    • http://biomassasia.net/data_ed/userfiles/file/jagulinum.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/4311f60bea65c68c7ab352d814bb1633/59191871349.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/4bvkhvk5vfb2ok18d3g5ind7ve/4095768025.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/67d72ea739fd3358e8c6a97276861881/66497426657.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/2339b65ad97b8945bf6e28ec392ecd54/videpikularig.pdfIn PDF document text
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/7dabfa48e17865b00b87757ac3169c31/75622968039.pdfIn PDF document text
    • http://2ds-creations.fr/userfiles/file/85420525021.pdfIn PDF document text
    • http://lateonsettay-sachs.org/userfiles/file/dikipunikisafi.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/1606d8dd4d46de---44441009415.pdfIn PDF document text
    • https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/7fd1dda6dc25f0c0f5ed9cd1e1d82c11/77214959116.pdfIn PDF document text
    • http://www.ecostroyservis.ru/File/kovujakogolunegumobetazi.pdfIn PDF document text
    • http://airholic.com/UpFiles/WebEditorFiles/file/kebimufagiweneganorunu.pdfIn PDF document text
    • https://vannordenvastgoed.nl/userfiles/file/92328343156.pdfIn PDF document text
    • http://djpress.pl/Image/files/lelodemevuvakulelen.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/78fae82b00aeb522c38cbdc735fa80d5/nonikedanidexepobidavuvik.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bff9b31d8b3---11192999388.pdfIn PDF document text
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/4e25b85e04fdf3c247e0d2d5b5acaa82/lesudomiz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=william+stallings+operating+systems+8th+edition+pdfPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB12 16124 bytes
SHA-256: 72569fd3bde416b80ed4606650c6974022711b01ed0d495b4bff05e34841b3f5
font_01_sfnt_off0001148e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1148E 11260 bytes
SHA-256: 752d9ee974e2609f5eaf8a8ca5109de9aa66306ed852d53bb396294217bf4fd3
font_02_sfnt_off00012e98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E98 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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