Malicious PDF — malware analysis report

Static analysis result for SHA-256 edaa9139ab7b4f79…

MALICIOUS

PDF

64.1 KB Created: 2021-01-16 16:06:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ac0fbb59caad4d36c534f282d1a106dc SHA-1: e1dce4267fe038510cff186276394fbb2bd32082 SHA-256: edaa9139ab7b4f79e67590e0ab1e0bd2833a1de4197953233251cb4c04bba38c
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains multiple embedded links, including a critical redirector link to 'traffking.ru'. The document's structure and embedded links suggest it is part of a phishing campaign, likely attempting to trick users into downloading malware or revealing sensitive information. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffking.ru/aws?utm_term=bubble+shooter+new+game In PDF document text
    • https://cdn-cms.f-static.net/uploads/4487665/normal_5fbb38dd1f696.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459478/normal_5fd88a8d115e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382423/normal_5f99b1b025b61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417049/normal_5faae2e26c568.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416798/normal_5fa4cadb24288.pdfIn PDF document text
    • https://bugemimeme.weebly.com/uploads/1/3/4/4/134403979/7540038.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/VWQgjER/39346155542.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501794/normal_5fdf183124acd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472776/normal_5ff655af529d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379733/normal_5fd6644266aa7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385647/normal_5ffcc6c080af4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408997/normal_5f9eb1f4ac9e6.pdfIn PDF document text
    • https://xomadugazulu.weebly.com/uploads/1/3/4/5/134597447/forigegebajaro-vemonalem-pemumav-gujavanek.pdfIn PDF document text
    • https://cdn.sqhk.co/nazopekujavi/iLidjd7/good_morning_good_night_wastickerapps._com.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gopuze/pobre_ana_chapter_3_answer_key.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_off0000c1af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1AF 5380 bytes
SHA-256: f2fe01fec30b99f91ef54f0c327bf4b2cf830e3cc34f7ebf87ca20905612360c
font_01_sfnt_off0000d3e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E2 9316 bytes
SHA-256: a4acb55db8885e0451c3c17eb6fb461327ec3c9c5d8d9f52334f594e43a6c9f8

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