Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5af739736dc8ea1…

MALICIOUS

PDF

41.2 KB Created: 2020-08-02 22:38:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5d082d4426b1cdb7e8fe3eaa09c1c63d SHA-1: 1956410e7197223b7be096693b98cf45ea9ef7eb SHA-256: b5af739736dc8ea1dc0848175e4fb1f5342a0ffce0f6fb5d577b53ea4f3ed0c3
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body also contains the same URL, presented as a lure for 'Games hacking tools for android'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for obfuscation or to appear benign. No scripts were extracted, and the PDF structure itself does not indicate further malicious activity beyond the redirection.

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=games+hacking+tools+for+android In PDF document text
    • http://files.somadharma.com/uploads/1/3/0/8/130813357/wakovo.pdfIn PDF document text
    • http://files.mikerossdesigner.com/uploads/1/3/0/9/130969322/lopadejupokiwik.pdfIn PDF document text
    • http://files.4lazydogsofsugarhall.com/uploads/1/3/2/6/132681586/gunigugu_fofewu_wofag.pdfIn PDF document text
    • http://files.expandedhealing.com/uploads/1/3/1/6/131606727/9297777.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/1/0430/7091/4717/files/bezaguwivukexan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/34039775749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3427/0101/files/fibaxerajirive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8054/8503/files/mabeladiwopex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8388/1893/files/xutemerazigoxavuloxogopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7865/5903/files/brewmaster_monk_stat_priority.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5114/7676/files/retoxotolipukopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5067/2033/files/81383554187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/popizumotidawesep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7348/6496/files/lanupo.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 5

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_off0000630e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630E 5528 bytes
SHA-256: f36c31a2c77bb1c01e1e91e92e581411c5b276b6dfad37f45d23fd7ce2390746
font_01_sfnt_off000075b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B3 10076 bytes
SHA-256: f9b2048444223ae342784c89b1fe5cedd642f4fbe3641c7a9d51df4d2dc01d4a

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