Malicious PDF — malware analysis report

Static analysis result for SHA-256 72f90b8313e99e0e…

MALICIOUS

PDF

47.3 KB Created: 2020-08-16 00:06:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e3052642e05057a27f6cee98cbe4a29c SHA-1: 2bcbf05928786162798cd1af1216f680dcf2b603 SHA-256: 72f90b8313e99e0e60203f73a8c490623264c7f5bf6173ae8a649266479abc56
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. The document body and heuristics indicate a lure for free downloads, likely a phishing or scam attempt. The ML classifier strongly supports the malicious verdict.

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/wb?keyword=zaleski%20backpack%20trail%20pdf In PDF document text
    • http://jugev.party-junkies.com/uploads/1/3/1/0/131070588/dexaxitudarared.pdfIn PDF document text
    • http://gizugu.calgarypopupweddings.com/uploads/1/3/1/4/131454106/mugoja_vujarewijafimob.pdfIn PDF document text
    • http://files.yvfoodhub.com/uploads/1/3/2/6/132682689/7808015.pdfIn PDF document text
    • http://files.canberracelebranteileen.com/uploads/1/3/1/1/131163599/fuvozizemitagi.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/1/0436/4691/0624/files/agamemnon_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4877/2519/files/89232386066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4061/8134/files/idsa_septic_shock_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9408/1687/files/biotecnologia_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/71928100664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0625/4504/files/88867529054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7755/7660/files/69429377578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7388/0739/files/turela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6114/8832/files/3812328696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6354/1917/files/key_highlights_of_interim_budget_2020.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E60 4884 bytes
SHA-256: dc32dd803a9d9f1c21c2fa86ef3b9d1c3c4d30f7aaf0a10d30039ce2905187fd
font_01_sfnt_off00007f07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F07 10340 bytes
SHA-256: 60e05ec4453a82c7982b2542872bc72c05ef4c4020e32d108dd4ae8f98eaed66
font_02_sfnt_off0000a258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA258 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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