Malicious PDF — malware analysis report

Static analysis result for SHA-256 031203b2563bd3c1…

MALICIOUS

PDF

71.5 KB Created: 2020-08-05 04:46:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 10cf5deb99e91bd30ef4acdc48e3feb0 SHA-1: aed23869ed7867d392ba615307759c73e700ef58 SHA-256: 031203b2563bd3c1e2cf23d01dccf931708b8e077719a96954f029d21c73fa07
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector to 'ttraff.com'. This, combined with the 'SE_INVOICE_LURE' heuristic, suggests a phishing attempt disguised as a document download. The ML classifier strongly indicates maliciousness, and the presence of numerous external PDF links points to SEO manipulation for traffic generation.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=rights+duties+and+liabilities+of+auditors+pdf In PDF document text
    • http://files.ashraeli.com/uploads/1/3/1/4/131406478/4674537.pdfIn PDF document text
    • http://files.tricendecokithomes.com.au/uploads/1/3/1/6/131637257/digisojizaxigej_lezedimeg.pdfIn PDF document text
    • http://files.yahshigul.com/uploads/1/3/0/7/130739783/wabus.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/1/0429/2778/4099/files/35368695575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2815/9381/files/togisofaripawak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85286147205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1546/1275/files/badug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zukax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6193/6282/files/80100681077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89120683065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2423/7212/files/31436709130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8203/9964/files/37339025982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6123/8168/files/82202793434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexidemunuviviradepinitim.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_off0000cd4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD4C 5332 bytes
SHA-256: fe28a53011ff0abb61a21638b7eb8ee29b86c39581378a3db48223f1624e76a4
font_01_sfnt_off0000df5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5A 10272 bytes
SHA-256: 5505412aa85b36a173d9c19aa32ee902f50106c181a1b879eeceba5c08ad29b6
font_02_sfnt_off0001026b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1026B 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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