Malicious PDF — malware analysis report

Static analysis result for SHA-256 090604f34abb116a…

MALICIOUS

PDF

51.3 KB Created: 2020-08-20 10:47:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 61cf3ad75eee1eac299431f4d669dde6 SHA-1: c6fe9cffa78247bb6757b6cbb71735f6563a9d9a SHA-256: 090604f34abb116ae34555d4744510fbe7c1e12737520af78d026fbba8135348
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The document body, though heavily obfuscated, contains text suggesting a lure related to 'standard bolt sizes chart pdf' which is used in the redirector URL. 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.ru/pify?keyword=standard+bolt+sizes+chart+pdf In PDF document text
    • http://sulivu.wabrownarchitects.com/uploads/1/3/1/6/131606349/0a26076422d9d5d.pdfIn PDF document text
    • http://lorewuj.element3healthclubs.com/uploads/1/3/0/8/130815017/3115306.pdfIn PDF document text
    • http://files.jironlaw.com/uploads/1/3/1/4/131483254/xipozexuwude.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/1/0435/1967/2472/files/49095231503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1098/0000/files/frp_bypass_apk_with_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/62831129417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/86727118645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6871/0294/files/bonafide_certificate_application.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4571/4077/files/head_injury_advice_child.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5845/3918/files/fodojinajoxoxujepopobiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0310/1863/files/busalekogejakoraxowomix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/bisemulow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7142/9015/files/bible_kjv.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_off00008223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8223 5536 bytes
SHA-256: 23aad76b7230a9640861ccee49c6ed0e0db60c8e033eceaf1c88efd2a00dbac5
font_01_sfnt_off000094e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94E7 14068 bytes
SHA-256: 06d788de7bf228533e30118c0a9c562af1c367b51dcb34270a7a5fcb357710cf

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