Malicious PDF — malware analysis report

Static analysis result for SHA-256 7081715eec956b89…

MALICIOUS

PDF

40.0 KB Created: 2020-08-08 06:20:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fb3fe14222432dd74d8b87e2625c11a1 SHA-1: 687e04a6c878f0a5021e07a091770724a7f4faa1 SHA-256: 7081715eec956b898e7f9b7e8cc32fa653806f73e502afb2f98097887db42842
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body and heuristics indicate a link farm strategy, likely intended to phish users by presenting a lure for a free PDF download. The ML classifier strongly supports the malicious nature of this PDF.

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=que+es+holismo+pdf In PDF document text
    • http://files.burchfisher.com/uploads/1/3/2/8/132814138/linigitupak.pdfIn PDF document text
    • http://nonib.camparrowhead.net/uploads/1/3/0/7/130775162/3da0b86c5ddf265.pdfIn PDF document text
    • http://files.novadesignandbuild.com/uploads/1/3/0/7/130740044/lofidogovubebad-fanijopeve-zogew-mobezovobo.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/1/0433/9800/4899/files/tijob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3651/6250/files/joranomibap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3748/1365/files/17135779427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9392/3742/files/reversed_carnot_cycle_problems_with_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/bucoliche_testo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7070/9142/files/vumesejekuzugeputuwig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8396/4324/files/11161397312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8325/9301/files/brendan_brazier_thrive_energy_cookbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2105/7700/files/lorelikamevidalalifupad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1107/9317/files/denakanapodozogefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6205/5332/files/anticipatory_bail_in_up_notification.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_off00005dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEE 5036 bytes
SHA-256: da38cbf2f4fa0e5a99a9e69364ad2fcda18b4712dd8a3fcd4fd87cd4a4d95994
font_01_sfnt_off00006eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEF 10904 bytes
SHA-256: 6cc68b0167c3feea36710b03468d288b42cd80e4247c491f6a3d987bb72efc49

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