Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd892d49277d580c…

MALICIOUS

PDF

71.3 KB Created: 2021-02-09 19:18:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9dc92459fcd1d89821846911164f33ca SHA-1: dbea6cdc8b65937dfed2f557ff9b3b48797cb09e SHA-256: fd892d49277d580c928cfdfa5353df50ac0c04ffea41c2b157a0dc8d767014b6
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://bologen.ru/aws?utm_term=aap+se+mausiiquii+photo PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451350/normal_5fe628cbd23d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366665/normal_5ffe4b6997011.pdfIn PDF document text
    • https://fewebiporunivag.weebly.com/uploads/1/3/0/7/130775920/mudugeni.pdfIn PDF document text
    • https://cdn.sqhk.co/gejixoneku/icLTgcX/voice_over_acting_coaches_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408862/normal_600fbbfdad22c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459787/normal_6016ce2fe2a41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370319/normal_5fda1dc733829.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383802/normal_6012527d9fa64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408348/normal_5fda57f046a30.pdfIn PDF document text
    • https://betivina.weebly.com/uploads/1/3/0/7/130774994/witomu.pdfIn PDF document text
    • https://xupumoga.weebly.com/uploads/1/3/1/1/131164417/9ee2085e998.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374976/normal_5ffc0c360e2db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475586/normal_60055045e04e6.pdfIn PDF document text
    • https://cdn.sqhk.co/pagifizipafo/gfijEgj/dojata.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480161/normal_5ff7a91fe235f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481424/normal_5fde639a50a90.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417815/normal_5fef43c30fea6.pdfIn PDF document text
    • https://ridoduna.weebly.com/uploads/1/3/4/5/134528127/9080394.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
    • 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_off0000cae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE3 4824 bytes
SHA-256: 6fdf8a9f252e55a83151b36f90341c6038590432db017db467fb2ae448dd072d
font_01_sfnt_off0000db54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB54 11584 bytes
SHA-256: cc771c1dec9da392d500cbdfee5c1288d0ad3873dc5a0a83b6accab059a55da5
font_02_sfnt_off00010240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10240 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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