Malicious PDF — malware analysis report

Static analysis result for SHA-256 691bb84746ad34f5…

MALICIOUS

PDF

45.0 KB Created: 2020-08-03 07:25:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c7f498c14d75bf444b6f4e05375f9d4b SHA-1: b604201f85f7d4a3d8389fd0ca0dbde12b6b5a89 SHA-256: 691bb84746ad34f52cd1c2ef404c883cc902fb9b76086682d78064648aac6bd7
234 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=arduino+pitches+h'. The document body, though heavily obfuscated, also contains this URL and a list of other PDF links, suggesting a link farm or SEO poisoning tactic. The presence of a 'Password-protected archive handoff' heuristic indicates a common technique to bypass gateway scanning, implying the linked content is likely malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=arduino+pitches+h In PDF document text
    • http://files.colwynnetballclub.co.uk/uploads/1/3/1/1/131163856/rafifovuwon.pdfIn PDF document text
    • http://files.karlyperez.com/uploads/1/3/0/8/130815014/9403627.pdfIn PDF document text
    • http://files.cornerstonepie.com/uploads/1/3/0/8/130874683/f389ce1e1ac.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/1/0429/4053/0854/files/mawazefamiwel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/30856127011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/mapupomejunaligabiveba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7620/6238/files/kavidelifajaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4580/6503/files/32965221881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/87737975774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8314/4093/files/lififixupugofaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2819/3186/files/genuzinikonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1479/7981/files/47988194981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8027/7406/files/bafaxirijafin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9592/4640/files/85845017639.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_off0000659f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659F 4908 bytes
SHA-256: f9bc1c839721aa57d785cf85b89db14f97e321bec9e32038b164c93993d72ae3
font_01_sfnt_off00007651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7651 16012 bytes
SHA-256: 16451a7bb2462f511a503c033dad3ad32b865ce888adeae72ed060892fe57059

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