Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c091ffd675d20a8…

MALICIOUS

PDF

37.7 KB Created: 2020-08-17 18:12:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c1150221d0ae826436774c9a27590cea SHA-1: 6a3ef2b13c3938e66cdb999554da9a6891d76588 SHA-256: 4c091ffd675d20a898b292f560371401d28e9d6b549012633e3f683cd7ad6add
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=blauberg+turbo+100+manual'. This URL is presented within the document body, disguised as a manual, to entice users to click. The PDF also exhibits characteristics of a link farm, with numerous external links, including one to a Shopify domain. 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=blauberg+turbo+100+manual In PDF document text
    • http://files.meadowlodgebiblecamp.org/uploads/1/3/0/8/130874197/zinowofojenebu-sasupa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/will_johnston_s_puzzle_pointers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0126/1730/files/hemangioma_hepatico_tratamiento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/79494167225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5240/0789/files/kojagiredilababe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6300/0734/files/33804122169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/dujalugalitojoxugatawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4660/6760/files/ruzatejuliganaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2640/7833/files/time_card_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0441/2583/files/wobipepepewudofuxufim.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47F5 5044 bytes
SHA-256: 79be7d2abc1ee036fd09abfa28677bed318889a3a869261eb77787308f97599a
font_01_sfnt_off00005905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5905 10328 bytes
SHA-256: 2fddf06394cf839fac975eeff49ecf025a04ab981e1acde433a761e626942256
font_02_sfnt_off00007c44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C44 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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