Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d3a5cd3fcfb232d…

MALICIOUS

PDF

39.2 KB Created: 2020-08-18 15:54:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 601ab8a1f740bd379ec31c159530a89a SHA-1: c21781a885c06419608fa4bbb5d2a4142d85fe1e SHA-256: 9d3a5cd3fcfb232defd1d9102e1b19ed537e3f94c99208213fe26d0664d26e58
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'frame relay tutorial pdf' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm heuristic further supports the malicious intent of directing users to external content.

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.com/pify?keyword=frame+relay+tutorial+pdf In PDF document text
    • http://files.thecheekyfellow.com/uploads/1/3/1/3/131380625/9085819.pdfIn PDF document text
    • http://wapet.noltextruss.com/uploads/1/3/1/3/131398008/xebebikukav.pdfIn PDF document text
    • http://files.northstarchapter.org/uploads/1/3/2/6/132681885/1780449.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/1/0437/6012/4065/files/verupazuzalomasokolite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9869/4042/files/lakorojitutofoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/xoxotadosixevizifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/41169403867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/kiwetejusepovenudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5855/1189/files/jeep_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/behavioural_design_patterns.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9273/0275/files/6069379026.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_off00005c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C27 5068 bytes
SHA-256: adfa2b4d60f81d2d202980a89b49e6fe7754ffd7c5a90933041c42a4e29c9d33
font_01_sfnt_off00006d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5D 10272 bytes
SHA-256: 8ebba1fcda7130e17da80916843236b38b58809facce251f6ea71a5dcff1fd2a

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