Malicious PDF — malware analysis report

Static analysis result for SHA-256 afbf311c2fa08c09…

MALICIOUS

PDF

38.2 KB Created: 2020-08-19 06:10:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5bcc31686ad04b781723b3646965a3e5 SHA-1: b1f05f05541ea97a469201765fb24729406af2f8 SHA-256: afbf311c2fa08c093515e20676e066d8689bbbe3317c6be219f1f958db8c950e
210 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a lure promising free software, which is a common tactic for phishing or malware delivery. It includes a link to a redirector, ttraff.ru, which is flagged as malicious. The document also contains a large number of links to PDFs hosted on Shopify, likely an attempt to manipulate search engine results or distribute content. No scripts were extracted, but the presence of malicious redirector links and the urgency/download lures strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ttraff.ru/pify?keyword=amos+20+software+free In PDF document text
    • http://files.accssfn.com/uploads/1/3/0/7/130776511/zotokuv-dokolazave-bedesul.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97897646990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9866/7163/files/jonomovedukoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/28902154442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/paruxinuwudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/1832/2839/files/bombay_movie_songs_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/500534398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2956/7387/files/miduketawomevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70913092576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/setikefopotogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5765/8521/files/balanitis_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5425/0654/files/the_seven_chakras_book.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 4

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_off000054eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54EB 5236 bytes
SHA-256: 51674a5a4022ffab4a7bc92f70d4680310ec599280d2c4979828925c20e5dd61
font_01_sfnt_off000066b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B1 11044 bytes
SHA-256: 620d0707f83688edd92be0cc4b4fc89f5da84100b1efdb72d5b9e3d5b2f5d359

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