Malicious PDF — malware analysis report

Static analysis result for SHA-256 cee008812bdb7396…

MALICIOUS

PDF

69.1 KB Created: 2020-11-24 17:20:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4a5da34ea37fe3667a7728cba3c176e7 SHA-1: 75bf4ea3c4d3c9d60d37044b60477b2affcb6bc4 SHA-256: cee008812bdb7396bc841721547b71de5918ad8259e79aa36426c831d70e7f78
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafffe.ru/123?utm_term=oregon+dmv+registration+fees+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4488317/normal_5fb2a4aec9889.pdfIn PDF document text
    • https://bigogewoxof.weebly.com/uploads/1/3/0/7/130739615/nasoribuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393893/normal_5fb258357e142.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/56ad63a.pdfIn PDF document text
    • https://vapipokolodux.weebly.com/uploads/1/3/4/3/134307816/a831c4613c.pdfIn PDF document text
    • https://toxoxazagole.weebly.com/uploads/1/3/0/9/130969938/9532655.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ramugimexixepaba.pdfIn PDF document text
    • https://gigewobejej.weebly.com/uploads/1/3/4/6/134638222/xabaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/kovilowab/94179971871.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/10043182239.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/academic_search_engines.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/louisiana_hunting_license_hip_certification.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/razesisal.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn 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_off0000c18e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC18E 5552 bytes
SHA-256: 9536799e1599b5220e67ddca1c46cc2eda303f58d2602e66e00edf3e6d86d926
font_01_sfnt_off0000d45d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD45D 10700 bytes
SHA-256: 524900e43c6051c49555b4d49c711b0a693fe6218d8c9c3d769032933966dae9
font_02_sfnt_off0000f927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF927 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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