Malicious PDF — malware analysis report

Static analysis result for SHA-256 49db8b2feba24063…

MALICIOUS

PDF

36.6 KB Created: 2020-08-05 07:35:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 33540f55d89e79a6e10a07f2ca058936 SHA-1: a6aae24b845a5bbf45b10949d08cf9de424dc5e0 SHA-256: 49db8b2feba240639393c3cceb6f02072fcec74e9c01e40fa4d27344feb5470a
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 with a keyword related to educational content. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content. The ML classifier strongly indicated maliciousness.

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=business+studies+grade+10+essays+pdf+2020 In PDF document text
    • http://files.lrbarms.com/uploads/1/3/2/6/132695575/9059515.pdfIn PDF document text
    • http://files.coldwatercreekranch.com/uploads/1/3/1/3/131382590/be1060f14873b.pdfIn PDF document text
    • http://files.bobdgorman.net/uploads/1/3/1/4/131452838/1b38a2a7d18d.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/1/0431/1918/1978/files/dopoputiripimexifipizov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/bidoxug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7069/3282/files/jikaluxositolofenipuwod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1631/3242/files/sopefasazakakafilat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2246/5699/files/nosuzijozudazelojol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1473/3480/files/vizumovugokolifota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0185/5646/files/49812980710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1197/3026/files/libaxefametorovotemexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nowivozepax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6341/0845/files/ridinumeluwutitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3662/2498/files/23974042744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0791/7729/files/45933831047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8553/6161/files/93993439662.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 7

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_off00004ef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EF6 5652 bytes
SHA-256: dda71cb40410ca50b03a56042b1571491acf9505ecc550d33b5dccc27ea2ad0f
font_01_sfnt_off00006259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6259 10184 bytes
SHA-256: d58fcff8b8224313d050f033306271ee653d85db471d0b9abf38186e0fd6f433

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