Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc897b2d92801ded…

MALICIOUS

PDF

43.8 KB Created: 2020-08-11 14:12:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 20369789f0121155b00bbaa4f80c193d SHA-1: 37e3e0532a67f337b2fc5732605673a4beda1238 SHA-256: fc897b2d92801ded2f507154c3867b75f780d669aef64da7cd469d733d714f57
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of embedded links, many of which point to a redirector service. The primary malicious link is https://ttraff.cc/pify?keyword=new+methods+of+teaching+english+language+pdf, which is designed to lead users to further malicious content. The document's structure and the presence of numerous links suggest a link farm or redirection tactic to obscure the ultimate destination. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.cc/pify?keyword=new+methods+of+teaching+english+language+pdf In PDF document text
    • http://files.seizediem.com/uploads/1/3/1/4/131438741/vewim_gifesimefipotu.pdfIn PDF document text
    • http://files.eastsidewestsideswcd.org/uploads/1/3/1/8/131872107/6ae01.pdfIn PDF document text
    • http://files.ahhot.com.au/uploads/1/3/0/9/130969546/ed55f136.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/1/0438/3460/5730/files/carla_spice_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6278/8245/files/18633729608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2921/7958/files/bibuvalesuxagifoguvak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wifufokamavobopizevotug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0658/1147/files/19759525154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9373/7110/files/35574259207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0724/files/tusozipulitimanema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1386/4615/files/xuxigaxezapenuwekawulijef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5229/3541/files/noxupolelafom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7798/2626/files/vitonudusajozosafugirur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/gatemupuwapavikevopesew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6903/1078/files/29084578497.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_off00006a7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7F 5532 bytes
SHA-256: 35e5ff0f1cce1f41c7ad24c35185db8862fd0f2bad909b72ba3aac7e18f008b9
font_01_sfnt_off00007d52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D52 10668 bytes
SHA-256: c197e7de5641c946d9a8acddb8be3ea3bbd66f51d48b517dc8d454b1b007d681

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