Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea586a9b63040912…

MALICIOUS

PDF

44.9 KB Created: 2020-08-06 21:34:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 51cb6ab447ff542986db4ca76659e025 SHA-1: 8932f1de3b49707f9bad102a72d39dfc6c84bea3 SHA-256: ea586a9b630409123480b602015aef595599803768bff792f4621aa4b3908940
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains a URL that matches this redirector. This suggests the document's primary purpose is to redirect the user to a malicious site, likely for further exploitation or phishing. No scripts were extracted, limiting the analysis of the exact payload.

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=vocabulaire+juridique+fran%25C3%25A7ais+espagnol+pdf In PDF document text
    • http://files.dearborn411.com/uploads/1/3/2/7/132740860/xokagilo.pdfIn PDF document text
    • http://files.elsarozendal.com/uploads/1/3/0/8/130813325/rejakisevaxajokevela.pdfIn PDF document text
    • http://files.mckinneypressurewashing.com/uploads/1/3/1/4/131438539/toxekunemo-kezapu.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/1/0431/0122/5114/files/1961778257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2392/4376/files/antimicrobial_activity_of_neem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/81274719993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3444/2908/files/gaxikokevuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6000/2967/files/cub_scout_whittlin_chip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8962/3208/files/wuwulonezumasolusupurito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3687/6695/files/les_outils_d_amlioration_continue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1293/2255/files/wetafisuromo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/5_practices_for_orchestrating_mathematical_discussions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/5913843744.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_off00006ddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDD 5812 bytes
SHA-256: 9a4954cb5977fba0f7f94fbf099c38fb27ea7053a123763e83cbb61b0a9e4667
font_01_sfnt_off00008168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8168 10696 bytes
SHA-256: 3dc05ba1d8d3c14853268515d9cbecbb31761b6d6096810c361929236019551b

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