Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b0309ee2bd568d9…

MALICIOUS

PDF

47.4 KB Created: 2020-08-09 04:29:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 56f5873d7ff20b4435c4967c410901f8 SHA-1: 93080216f193263485a6db155d926d29d9d6389c SHA-256: 2b0309ee2bd568d99ff21daadf1073f777744e347d815658f0430c1241adb048
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed for SEO manipulation, likely to phish users. The document body, though heavily obfuscated, contains a URL pointing to a redirector. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=school+building+plan+section+elevation+pdf In PDF document text
    • http://files.endurancepilatesandyoga.com/uploads/1/3/0/9/130969061/3ca0fbc.pdfIn PDF document text
    • http://tojoti.yadaorocks.com/uploads/1/3/1/4/131411688/960bf6cfe06287.pdfIn PDF document text
    • http://files.ikargb.co.uk/uploads/1/3/1/4/131409170/c416f2d8c877.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/1/0435/2226/1143/files/best_ffxiv_parser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/38037442739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/nodamolowamebabinisiwul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3831/8487/files/numerical_mathematics_and_computing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/salovarezisusuvatilivegad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/nijadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1167/0179/files/git_remove_all_untracked_files.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0267/4845/files/au_bonheur_des_dames_chapitre_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0627/9332/files/napepupotozulaxamusod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6034/7551/files/1685211806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9765/9294/files/2001_ford_ranger_repair_manual.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_off000079e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E9 5624 bytes
SHA-256: 1fcb4f9b717d4c50dc34b0fdf98bc04c18fc280f3de43cf6696d7d346f23963a
font_01_sfnt_off00008d14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D14 10324 bytes
SHA-256: 37c4a40361abdc113382645c38c5512a454b35617c25785441614d8a264c3ddf

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