Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d1266a24bad968…

MALICIOUS

PDF

51.1 KB Created: 2020-07-30 07:45:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e18c9671abfa3079debc958f63eafab SHA-1: 5fb75bc1be7d133df58b223a0f1a587e04692505 SHA-256: 14d1266a24bad9680a2d6cdb8befc3ead59b5cfd62a2646ed3398273015f9b0d
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body, though heavily obfuscated, suggests a lure related to 'biography writing format pdf'. The presence of multiple SEO-optimized PDF links indicates an attempt to broaden the reach of this malicious content. No scripts were extracted, but the primary attack vector appears to be the embedded malicious links.

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/pify?keyword=biography+writing+format+pdf In PDF document text
    • http://files.bigbuckssupply.com/uploads/1/3/0/7/130740429/lixajapujofe.pdfIn PDF document text
    • http://files.easeandexcel.co.uk/uploads/1/3/2/6/132683154/bc27ea8f3271b.pdfIn PDF document text
    • http://files.spiritwickcandleco.com/uploads/1/3/1/8/131871992/2017648.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/1/0433/8168/6437/files/jajonefawesorejowas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8419/3697/files/lizadivanovaxateki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5227/6632/files/wonefibamokididu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2323/5232/files/14111247614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7857/4490/files/81776022753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2027/1264/files/37751893556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nezax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9947/0486/files/53183751291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/figarawevig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7353/6161/files/fixunabot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8688/9625/files/pidagisutigipovelep.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 5

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_off00008c56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C56 5156 bytes
SHA-256: 9c222d6ffcfd99fa765da5090dfb883628bc5d7a450ae4e19f1183dd72405fb1
font_01_sfnt_off00009dbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DBE 9728 bytes
SHA-256: 1bcb9a6c3c4a224c6a27184bf5b4b5ee8c7ff213466278ce4d69e01c0e36f45e

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