Malicious PDF — malware analysis report

Static analysis result for SHA-256 958e4cbce32adf52…

MALICIOUS

PDF

41.7 KB Created: 2020-08-10 07:35:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 01e2f9516c0d1ea3fc6b382e6526a0e0 SHA-1: bd8ef9231d148b677ed2230874b08b8625d4f01c SHA-256: 958e4cbce32adf520281fc8dd29728d00d280e29f0803cb49dec48c92437466e
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded content, though largely unreadable due to encoding, contains URLs that are part of this link farm. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=aircraft+engine+design+aiaa+pdf', which is likely used to redirect users to further malicious sites. The document's structure and the presence of numerous external links suggest a social engineering tactic to lure users into clicking malicious URLs.

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=aircraft+engine+design+aiaa+pdf In PDF document text
    • http://files.parsonsarea.org/uploads/1/3/0/8/130874019/4621769.pdfIn PDF document text
    • http://jaxusa.apcglobal.nl/uploads/1/3/1/3/131398140/loxexen.pdfIn PDF document text
    • http://mawafamex.reggaeclassictouch.com/uploads/1/3/1/1/131164250/ruxepapofebete.pdfIn PDF document text
    • http://files.yaaitsanartstudio.com/uploads/1/3/0/7/130775413/41983ed9841fd3.pdfIn PDF document text
    • http://files.mylunarsign.com/uploads/1/3/1/8/131857482/6fcae3.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/1/0432/1764/9819/files/basic_english_vocabulary_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5648/0935/files/61995022479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0087/8488/files/95436000275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89573664631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9808/7328/files/49359570600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7529/6677/files/dosalonulimawutozumirove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6022/3397/files/vupofamekax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8991/0165/files/19326247898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6726/9532/files/bovaxebijojolizaxanuwota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/20556280617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5696/1438/files/watugivuxokovesogotutipir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3345/1944/files/advantages_and_disadvantages_of_smartphones.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 8

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_off00006307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6307 5280 bytes
SHA-256: 96860df2079b9788c8c1a6e2395a0837bd17e41c05e9debf68cfb04fe1037942
font_01_sfnt_off0000750f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x750F 11088 bytes
SHA-256: fc028cefa14348e4bd3278fc274a6aeca5c21b5ff410826bacc6a6106c0b4c03

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