Malicious PDF — malware analysis report

Static analysis result for SHA-256 0de90d5841ef75a4…

MALICIOUS

PDF

41.5 KB Created: 2020-08-10 03:52:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c6b6244737eda1f77f2775f1212746e7 SHA-1: 892852d5f1e20e228f427b8bb5b6973d1c89f698 SHA-256: 0de90d5841ef75a4ae3444b67145bf5c396a4fa4cbe3a2d6fdeea0073b651a36
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on what appears to be a link farm designed to funnel traffic through a redirector. The primary redirector URL, 'https://ttraff.ru/pify?keyword=game+theory+examples+in+real+life+pdf', is flagged as malicious. This suggests a phishing or scam attempt, likely using SEO tactics to appear legitimate. No scripts were extracted, but the embedded URLs are the primary indicators of 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=game+theory+examples+in+real+life+pdf In PDF document text
    • http://pijugig.bachelanilaw.com/uploads/1/3/2/6/132681352/5e94be6.pdfIn PDF document text
    • http://files.diannetwombly.com/uploads/1/3/2/6/132681556/b7f745bcb.pdfIn PDF document text
    • http://files.northhadleysugarshack.com/uploads/1/3/1/4/131437513/nisipob.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/1/0440/8098/8325/files/natops_instrument_flight_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3565/5335/files/87621892214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nuruge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/62090516563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0807/7473/files/equality_vs_equity_in_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7526/4924/files/45129544556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5396/4702/files/desktop_tower_defense_1._5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0223/8888/files/3709885961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/ammonia_combustion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3468/1250/files/wuvema.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 2

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_off000064b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B7 5480 bytes
SHA-256: 222c5195a4a82bb2199d3c0489a525e8f36be5102cf6f2be652e84781d9d3716
font_01_sfnt_off00007742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7742 9976 bytes
SHA-256: 24a0ca9325f2a9336d09c48d0eb32f26314a7853c651fe290942fcfd1efd3930

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