Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b4ab13b81298964…

MALICIOUS

PDF

42.8 KB Created: 2020-08-09 00:12:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b88de65f1e37c3d4969d47d551f9568 SHA-1: d0e08dd7a40c04d3b5d8ce058d16b50fcddd2778 SHA-256: 2b4ab13b812989644c819d37823e688c993eca532d917beef3f5a6636f34df18
194 Risk Score

Malware Insights

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

The PDF contains a mass link farm, with many links pointing to Shopify domains, likely for SEO manipulation. One critical heuristic identified a link to a known malicious redirector at ttraff.ru, which is the primary indicator of malicious intent. The document body, though heavily obfuscated, contains the same URL, suggesting it's the intended lure. No scripts were extracted from this sample.

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.ru/pify?keyword=college+panda+sat+math+pdf+free In PDF document text
    • http://files.womeninbusinessisu.com/uploads/1/3/1/0/131069890/f7a7093.pdfIn PDF document text
    • http://files.fatherandsonfun.com/uploads/1/3/2/6/132680986/6707939.pdfIn PDF document text
    • http://files.kindercornerdaycare.com/uploads/1/3/1/6/131637839/luwobivomuginuvebam.pdfIn PDF document text
    • http://files.minerelementary.org/uploads/1/3/2/6/132682882/d7cf661df56054.pdfIn PDF document text
    • http://files.furryfriendsofscotland.com/uploads/1/3/0/8/130873846/parubesipodat-tulotinapo-toneb.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/1/0430/5109/0071/files/86337756923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8638/8136/files/gipexuvarubemizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6009/9222/files/accelerometer_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5929/6926/files/ordinal_numbers_1_100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9040/3737/files/dedufozenosupax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2222/9397/files/91114171552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/79976429111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6142/7876/files/kiveguwuvewewidotukukokax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9595/5358/files/83566708253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7664/9124/files/90319358066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/29820378307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4205/4048/files/animes_movies_2011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3583/6063/files/31293848521.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 3

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_off00006ab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB0 5360 bytes
SHA-256: a09bc827a0b2d66d1baf223b516203eec9732211e13344135bc4ffc2b343b024
font_01_sfnt_off00007cbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CBF 9856 bytes
SHA-256: 7722b162616c8265128f507b067fee03565b83443d300d664dabaa8865e88f49

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