Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a49e16021d363f4…

MALICIOUS

PDF

32.8 KB Created: 2020-08-05 00:14:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ccecc558ac805c4eebdd66e7d11928a SHA-1: 5ab8d43c6d2ff466266ff7f77b22a58059124bf4 SHA-256: 4a49e16021d363f4c2107229e3cbb262c72cdfbd5c3e6fe49ed6d837547463ef
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a link to a PDF about mathematical logic. The document body also contains numerous links to external PDFs, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

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.com/pify?keyword=introduction+to+elementary+mathematical+logic+pdf In PDF document text
    • http://files.iambatinsane.com/uploads/1/3/0/9/130969115/85c6c.pdfIn PDF document text
    • http://files.jaspercountygeorgiadems.org/uploads/1/3/1/8/131856950/sugisenobefeg.pdfIn PDF document text
    • http://files.cliqueticketproject.com/uploads/1/3/1/6/131606345/tukajewebaxotiz.pdfIn PDF document text
    • http://files.workinprogressllc.com/uploads/1/3/0/8/130874023/nupaso-vekegalerepe-memanufefuxe-kafuf.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/1/0437/3492/5463/files/65946323818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2082/7300/files/50162442560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9224/5666/files/convert_to_vsd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2363/8426/files/watovulatajifowamug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0067/6001/files/lavewozaziloneturamife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/bcs_viva_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4758/1856/files/xanobuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6193/5261/files/65543509587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5247/3243/files/dulopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9252/4700/files/dirilolulexaxiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5877/3662/files/kevojavugewiw.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 5

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_off00004584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4584 5428 bytes
SHA-256: addf8beaef9b7429cc7d8021fa523bf55860f5c1c48234a9a71760895939392a
font_01_sfnt_off000057dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57DD 8872 bytes
SHA-256: ee5626ddfa31e65acb9bf6b568f164e17fb04d64d331d6f21d0ef20987266c33

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