Malicious PDF — malware analysis report

Static analysis result for SHA-256 f44660657ffde886…

MALICIOUS

PDF

36.0 KB Created: 2020-08-22 11:41:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8bdc2411db290cebcb420d3674bf0a8e SHA-1: 8057ffea6f05a852234715b5b2f3aea0fdb7bf48 SHA-256: f44660657ffde886dd3eaf80e7570df469dd47f706d175a5f846c0df4af13344
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to 'multiplying integers word problems worksheet pdf'. The presence of numerous links, including those hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content. The primary malicious URL is ttraff.com, which is used to redirect users to further malicious sites.

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=multiplying+integers+word+problems+worksheet+pdf In PDF document text
    • http://vuguxo.spinwizards.net/uploads/1/3/0/8/130814328/7734d700a.pdfIn PDF document text
    • http://files.northeastgafoodallergy.org/uploads/1/3/2/6/132682022/kegizadukimij.pdfIn PDF document text
    • http://vegaxul.noramacquarrie.com/uploads/1/3/1/4/131438309/fb387.pdfIn PDF document text
    • http://kironek.appalachianflyandyak.com/uploads/1/3/1/3/131380600/4ed8b18907.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/1/0432/7945/0272/files/reduce_size_macos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8852/7014/files/61699897342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/fight_arena_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8483/1134/files/diwoxur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/wipurojabizimafedov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6666/1800/files/togetomevavapizoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/que_significado_tiene_la_palabra_languidez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/3006/3773/files/best_reader_for_ebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0222/3013/files/bollywood_movies_free_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/18852845348.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_off00004c8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C8C 5648 bytes
SHA-256: e2c798cbd40bcbc8ea9726414698cfdaea207e51f2025f6e00721141df4e2e3c
font_01_sfnt_off00005fb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB4 10368 bytes
SHA-256: 8795eb543453e4f0873ce42f3f511256e03a0ab33d6f3aeaa98e01b21e436669

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