Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a1b2158c5d2ff39…

MALICIOUS

PDF

39.5 KB Created: 2020-08-21 11:58:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4663a1fdf8a33d7b3aee577279180c4e SHA-1: 38f63564d86e41e68d7a2821aeab259f1f147807 SHA-256: 6a1b2158c5d2ff3910b92f687f96b5b87628b1916254e7afa0410091a79203c8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to Shopify domains hosting PDF files, suggesting a link farm or SEO manipulation tactic. A critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to malicious content. The ML classifier also 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=columns+in+excel+spreadsheet In PDF document text
    • http://files.nwkenpo.com/uploads/1/3/0/7/130739590/funidopozisizodotad.pdfIn PDF document text
    • http://files.glassmermaids.com/uploads/1/3/1/4/131453215/75c7263b03cbc12.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/1/0433/3309/1480/files/29609263785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3080/5671/files/domingo_garcia_belaunde.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1656/8482/files/baworosaxapeteve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2073/7950/files/20525845925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/sarazijifuxusakewutogoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6372/0613/files/gojufinamisifewikedomifuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7106/8577/files/72768572529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8606/2495/files/abscesso_perianal_antibiotico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6764/5857/files/general_chemistry_mcquarrie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2773/2379/files/imperative_sentence_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9688/3868/files/98642818150.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 1

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_off00005e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2A 5284 bytes
SHA-256: a5193a643c218751726c25d913d7df97459260d7ecd21cc27e82ee356aad017d
font_01_sfnt_off00006fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEF 9828 bytes
SHA-256: 3b63ed64cd529f7325733f67089808c6173899fe3b25575e7b4432f64912fd4e

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