Malicious PDF — malware analysis report

Static analysis result for SHA-256 be78a8d20d79e957…

MALICIOUS

PDF

44.8 KB Created: 2020-08-26 08:40:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d10b5bc3e5b4c1ea630cd8903397fa6 SHA-1: a2ec97c0f861f6473c7a2d6b0be281d5ba658719 SHA-256: be78a8d20d79e9577d579a3bfe44ad08ff572b644a9672ee1d9408d37428d718
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.link/pify?keyword=ezgo+36+volt+battery+charger+troubleshooting'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many pointing to Shopify domains. The document body, though partially corrupted, contains the same redirector URL and a benign-looking PDF link, suggesting a lure to a malicious site.

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.link/pify?keyword=ezgo+36+volt+battery+charger+troubleshooting In PDF document text
    • http://vegabo.dundasmassage.com/uploads/1/3/1/3/131398097/7351158.pdfIn PDF document text
    • http://files.barrettbrownpro.com/uploads/1/3/0/8/130874524/55ab4f.pdfIn PDF document text
    • http://teginek.curtfonger.com/uploads/1/3/0/7/130739615/5734659.pdfIn PDF document text
    • http://files.mvcms.org/uploads/1/3/0/7/130739318/lolifejiwozite.pdfIn PDF document text
    • http://files.protectionfenceco.com/uploads/1/3/1/8/131856234/tuboj-ziwatabom.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/1/0431/0482/9602/files/nigumimibusepalava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4426/6399/files/iron_deficiency_anemia_nejm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9723/5363/files/limifasaduvasiwoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/20345292420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dagezaluvonanapukinuwit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/99649551533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4235/6904/files/lategamutijurewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7015/1061/files/85432970146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1478/2109/files/vesozalu.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_off0000677c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x677C 5688 bytes
SHA-256: 42ab1b3ee9d4d3fa696af9829442875b7086bb16abdef7be858e049806a8f1fe
font_01_sfnt_off00007ae9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE9 13652 bytes
SHA-256: 37d6b5ba03adbf088aae1619544483474163f202c68de81de60319bf13e8fc4f

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