Malicious PDF — malware analysis report

Static analysis result for SHA-256 29f1ac66e450bb40…

MALICIOUS

PDF

42.9 KB Created: 2020-08-04 05:02:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86c0507fff0b452766d1c4a1211e352a SHA-1: 416900f0938bfe0b3267b56b85dd32d7f90eadbf SHA-256: 29f1ac66e450bb40c9af1a54fc7606a0147c8750a2e2493f0cfdec5bc1e550b3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=genetic+programming+an+introduction+wolfgang+banzhaf+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links hosted on cdn.shopify.com, suggesting an attempt to distribute or obscure malicious content. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent.

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=genetic+programming+an+introduction+wolfgang+banzhaf+pdf In PDF document text
    • http://files.briarmere.co.uk/uploads/1/3/1/4/131453081/15bae80dfde0a2.pdfIn PDF document text
    • http://files.elaionasfestival.com/uploads/1/3/1/0/131070178/8b9b5.pdfIn PDF document text
    • http://files.meanevilstepteacher.com/uploads/1/3/0/7/130775084/19e087b886c0.pdfIn PDF document text
    • http://files.peachmountainorganics.com/uploads/1/3/2/6/132682655/dunir_petigomasu_zavexavadixo_badolapomimi.pdfIn PDF document text
    • http://files.trailofmusiclegends.com/uploads/1/3/1/8/131857213/pabavedakikaz.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/1/0427/9818/6652/files/netanavawujufune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/turadowupusupokunibip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9234/4999/files/66658445756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/43094840717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9467/5357/files/ejercicios_de_caida_libre_fisica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7471/4790/files/cours_espagnol_gratuit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20726054751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/76915466193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/40273177539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8336/5528/files/xasofujesilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5086/9671/files/nulosamirunotepoxoxapuxub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4091/3046/files/vodezemojususutufuwinuras.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8089/9989/files/81775922306.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006890.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6890 5704 bytes
SHA-256: a881be8726c80614bd1e5dc6be74c4ae80098837463a7a79a964ef93ce5e0a95
font_01_sfnt_off00007beb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BEB 9892 bytes
SHA-256: c05745bdaecbc4fe814c7e4c49dd6c2d2d56a914203b091b4b7759eb11cf9e5a