Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad1c949d177efd4a…

MALICIOUS

PDF

37.8 KB Created: 2020-08-18 15:27:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f416df1c1c6cb0e21c0e4345c1ab63ec SHA-1: 0e8cf4b98d0a5b22e26a994d63fc54e83f7688af SHA-256: ad1c949d177efd4a6720394f50eca7e07a939c0d7fa08a70903b3846a098906c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body and heuristics reveal a large number of embedded URLs, many pointing to Shopify-hosted PDFs, suggesting a link farm or SEO manipulation tactic. One of the primary URLs, https://ttraff.cc/pify?keyword=magnet+sheet+metal+houston+tx, is identified as a malicious redirector.

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=magnet+sheet+metal+houston+tx In PDF document text
    • http://files.chitrawalmsley.com/uploads/1/3/1/6/131637881/kelumig-jelitubenaduz.pdfIn PDF document text
    • http://files.therobertabadydogfoodcoltd.com/uploads/1/3/0/9/130969277/c5598d11a4.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/1/0449/5500/9192/files/marketing_en_francais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8251/3570/files/blender_rotate_around_object.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3467/3305/files/93233609651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8270/3257/files/pupekubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3758/1734/files/dead_by_daylight_legion_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7622/2114/files/volkswagen_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4244/6231/files/68918572580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6385/9617/files/photoshop_convert_to_jpg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7279/6310/files/koxawera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2562/8316/files/service_host_sysmain.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/76974320447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tovunegorudakumuwi.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 4

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_off0000552a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x552A 5076 bytes
SHA-256: f296991567ff71d7f3e4935f7efd8c48ace830fce23f687eca639fbc4b5db645
font_01_sfnt_off00006654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6654 10608 bytes
SHA-256: 2bd500fbcc2f1e6b9f7e079fde2ee2047f7c34375005621539ed7cc26acc8b94

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