Malicious PDF — malware analysis report

Static analysis result for SHA-256 7075698f79656eff…

MALICIOUS

PDF

65.6 KB Created: 2020-12-13 15:03:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e5609b71088d8d0c8e58701c304b4906 SHA-1: 940e0a0aa759051eb56f8261f8880a2e5de7ef26 SHA-256: 7075698f79656eff217b6a21ee4b7a6e7581228479df6efa9c2423db61fad77f
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 0.9998

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://traffset.ru/aws?utm_term=grade+5+worksheet+indefinite+pronouns PDF link annotation
    • https://vebaxifi.weebly.com/uploads/1/3/4/3/134360040/xidedajajumu.pdfIn PDF document text
    • https://dexekuweda.weebly.com/uploads/1/3/4/7/134705305/75bcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477655/normal_5fd1bfbebfe4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369504/normal_5f87cba010a3a.pdfIn PDF document text
    • https://gefojepedawe.weebly.com/uploads/1/3/4/4/134478994/jogunarabozeje_napizivupimibap_gosopegegak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382639/normal_5fb72d993c939.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366047/normal_5f8bef5532f36.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481676/normal_5fc6bd8883ed4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374545/normal_5fae963ee5e7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427097/normal_5fd60c7238079.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478946/normal_5fcefb24931eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410433/normal_5fc1c7b4bfc6c.pdfIn PDF document text
    • https://loxuvamozevu.weebly.com/uploads/1/3/4/3/134310095/6528086.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c1a3955-9266-4754-af40-a50ef443b016/gajesogalum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a144199-1e76-48ca-ace3-3db37e28516b/bezodusenazuzubezoxu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC370 5408 bytes
SHA-256: 817651a4e1cae5f41f4b2ebdda60cf23effa0b307727dafff8d58296ee7fcf34
font_01_sfnt_off0000d5f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F1 10564 bytes
SHA-256: c8b999fe2617e00ed1a9e84666f2fefc0c7ead522d12480e1697b21254c06e0a

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