Malicious PDF — malware analysis report

Static analysis result for SHA-256 876168ddd7c2c5ee…

MALICIOUS

PDF

45.8 KB Created: 2020-09-18 17:06:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ae0bfae37c06278fb3342ab392e6ba2 SHA-1: 7044aa7579dd044fdf667937a5209bb588484f4c SHA-256: 876168ddd7c2c5ee921844a08bfa479e6663c41daea79299b2d73bb4af958a0a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links, including one to a known malicious redirector at `ttraff.club`, which is likely intended to phish users. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of numerous links to external PDFs suggests a link farm or SEO manipulation tactic to distribute malicious content.

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.club/wix?keyword=bacb+task+list+5+study+guide In PDF document text
    • http://files.internationalcancercluster.org/uploads/1/3/1/6/131607943/wewuzirasami.pdfIn PDF document text
    • http://files.montanabirdsurveys.com/uploads/1/3/1/6/131606688/lomefaxid.pdfIn PDF document text
    • http://files.scottrulandphotography.com/uploads/1/3/2/6/132695244/bobokakozinotel-gokesugatater-jojibufisobiwe.pdfIn PDF document text
    • http://files.pemmensgolf.net/uploads/1/3/1/3/131379612/febokibilodirina.pdfIn PDF document text
    • http://files.northyorkmoorstourism.com/uploads/1/3/0/7/130775677/xulaferana.pdfIn PDF document text
    • http://belobeda.jmccormickbennett.com/uploads/1/3/0/8/130814328/nomigitigetaladi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f59b0b9d-5d38-43bf-aefd-84966829013c.filesusr.com/ugd/9f2514_207fd364fa944bbfbf815b0e3d1d8aa7.pdf?index=trueIn PDF document text
    • https://c7130e1f-596d-4fe0-9b8e-3edf0c97ebd1.filesusr.com/ugd/d162e3_be24bf0987d249aba0ff00e308366d57.pdf?index=trueIn PDF document text
    • https://a43c107c-c7b4-486e-93b1-c12fd5910aa6.filesusr.com/ugd/98e2de_87df0cf493b74fbd9e77087338be8610.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7317/4680/files/96949182476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0341/2633/files/assertive_communication_training_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4128/1432/files/cub_cadet_lt1042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/wamulutipav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7949/0968/files/dutejerutemivuwi.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 8

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_off000071fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71FE 5492 bytes
SHA-256: ff82c56f6f34a0a1740f2704064e87e69b2348c2a2489a2ab29a5a7d19a85487
font_01_sfnt_off000084ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84CE 11036 bytes
SHA-256: 1df277c24b47ee169de0f60c3e4d7ffc9856c925928ec370fa9a4e02dfe16b01

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