Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e3b077210319c7…

MALICIOUS

PDF

71.4 KB Created: 2021-01-13 02:53:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0452a84b58356e8460513c063eb262b1 SHA-1: 6ccbd062d79f6c231c3c8052e9cd36825892fde4 SHA-256: 03e3b077210319c7797455e0e4278823bb6283d9102930d79ceb228923df1803
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file is flagged as malicious by multiple heuristics and a machine learning classifier. It contains embedded URLs pointing to known malicious redirector infrastructure, specifically 'https://traffmen.ru/aws?utm_term=astroneer+mac+os'. The document also contains instructions to disable security software, a common tactic in phishing and malware delivery. While no scripts were explicitly extracted, the nature of the embedded links and the security bypass instruction strongly suggest it's designed to lead the user to a malicious site or download a secondary payload.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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://traffmen.ru/aws?utm_term=astroneer+mac+os In PDF document text
    • https://cdn.sqhk.co/bitizulokiva/ugzljgC/zigefeligo.pdfIn PDF document text
    • https://nenawobu.weebly.com/uploads/1/3/4/1/134131353/jaxuzenebojapipowo.pdfIn PDF document text
    • https://cdn.sqhk.co/powirafawume/ijchhtR/first_aid_beauty_honeysuckle_reviews.pdfIn PDF document text
    • https://nijeliwawinezim.weebly.com/uploads/1/3/4/4/134497061/0d94e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385202/normal_5f9570652e84e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483070/normal_5fdabcd22492b.pdfIn PDF document text
    • https://vekeliludodim.weebly.com/uploads/1/3/4/7/134745250/a7804a.pdfIn PDF document text
    • https://cdn.sqhk.co/wazafepel/bSejhIm/mexican_train_dominoes_gold.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530937/normal_5fc296e3b5cbf.pdfIn PDF document text
    • https://cdn.sqhk.co/numokafas/aLhiXPc/weather_app_icon_anime.pdfIn PDF document text
    • https://cdn.sqhk.co/munemuzabuk/iawVgjA/48249795842.pdfIn PDF document text
    • https://wivixilor.weebly.com/uploads/1/3/4/3/134371520/9967434.pdfIn PDF document text
    • https://sevepamazajekul.weebly.com/uploads/1/3/4/7/134745822/zuvusimufufi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dd23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD23 4900 bytes
SHA-256: 3807ee1ecbc20ec31146b5096abc0de5aaaea074629ab145779ecd43bb2a2933
font_01_sfnt_off0000edb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB0 10268 bytes
SHA-256: c0cbb5ee0b30927e89b75710a7faa0a05d91832f00f2141eb66f9a7f817ccfc7

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