Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eb47b0f5f604876…

MALICIOUS

PDF

52.6 KB Created: 2020-08-20 01:48:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 808405a87cbb98f313a6a2951d785337 SHA-1: 517fff805001d732026a46af4e4d5eaaf1a543af SHA-256: 5eb47b0f5f604876eea4531da1468d8aa342c69091418c57e4c809763f152659
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or SEO poisoning tactic. The primary malicious link redirects to 'ttraff.ru', which is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL, indicating an attempt to trick users into clicking it for a supposed free download. No scripts were extracted, but the presence of multiple malicious and SEO-related links strongly indicates a phishing or malware distribution attempt.

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=what+is+acrania+deformity+in+babies In PDF document text
    • http://files.elizabethelectricians.com/uploads/1/3/2/8/132814906/mixaxasijigomu.pdfIn PDF document text
    • http://nuwel.citylimitshairstudio.com/uploads/1/3/1/6/131636725/kizitoxejakom_nififupovat.pdfIn PDF document text
    • http://wizek.bikseriet.com/uploads/1/3/0/8/130813834/6700138.pdfIn PDF document text
    • http://files.holychildcatholicschool.org/uploads/1/3/0/8/130814397/b72a99ee68b.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/1/0430/4424/1562/files/agile_software_development_with_scrum_ken_schwaber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9459/8047/files/mutaxadupetivogafewexig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6670/3516/files/ny_dmv_forms_eye_exam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8555/2034/files/tiwigololaluvajukavagefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rafudegilezenetizaxesuvos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/fivexakeneg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5835/4584/files/learn_json.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0185/6679/files/bifelepolowutujimajaweto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3269/9302/files/20325245855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2846/2243/files/pajiwiworiraz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/mac_keyboard_shortcuts_symbols.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7369/4872/files/xodeveruj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8787/2671/files/text_over_image_bootstrap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1438/8892/files/82927062599.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_off00008db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB6 5484 bytes
SHA-256: 620f8681eaafbcf8de2473b8ad004c78c4dd9027961a63fbaef449693dc4a670
font_01_sfnt_off0000a03c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA03C 10712 bytes
SHA-256: c66c0f3464788446478780886a90e2bc3c8085a3f619df133ff086a8362770b5