Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d031c4f1a05b3af…

MALICIOUS

PDF

113.5 KB Created: 2020-08-17 06:01:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bb63169c0a9cfc442a8010e8314eb99e SHA-1: 4717f037a84661bc7c8672992cecbd8a717134e2 SHA-256: 9d031c4f1a05b3afe2368cabf5cebc55da6934c4d7af7553afee7e642f5af70b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged as malicious by multiple heuristics, specifically for containing a large number of external links designed as a link farm. One critical heuristic identified a link to known malicious redirector infrastructure at https://ttraff.ru/pify?keyword=ax+2012+system+requirements+guide. The ML classifier also strongly indicated maliciousness. The document body contains obfuscated text and a URL that appears to be part of the link farm.

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=ax+2012+system+requirements+guide In PDF document text
    • http://nivota.weshall217.com/uploads/1/3/1/4/131407995/zafibok-xejiw-gasogutesom.pdfIn PDF document text
    • http://files.alexjtunney.com/uploads/1/3/1/0/131070317/mapex-limukadixajoz.pdfIn PDF document text
    • http://velopoxan.ivoryemily.com/uploads/1/3/0/8/130813453/pijokidasesowojam.pdfIn PDF document text
    • http://xalok.buyers-club-solar.com/uploads/1/3/1/4/131437462/3968380.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/1/0430/1350/5185/files/motorola_surfboard_sb5101u.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3495/9256/files/popepafojate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5892/0605/files/tatominoxipurosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8062/0955/files/new_headway_beginner_student_s_book_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7135/7596/files/pexapobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1147/1520/files/concrete_and_abstract_nouns_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8705/0390/files/69559342267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2190/5570/files/tamil_nadu_holidays_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6863/6840/files/93958550132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1855/0439/files/xuraxomoxijefivetojofa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001765f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1765F 5284 bytes
SHA-256: d71ebac58ca4e0316ce0fddfa084bc29898ea14f25af138fdda1d2178efd4665
font_01_sfnt_off0001883d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1883D 10316 bytes
SHA-256: b4f13f2f857ecd2b51bc92b8dc5fe312aa65b40abaf76e8c297d205a1c85658c
font_02_sfnt_off0001ab3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AB3E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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