Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dec8e3a2fe96c99…

MALICIOUS

PDF

49.2 KB Created: 2020-08-11 22:49:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5838bb794e4392f1d387c2b260281def SHA-1: f7a2fd6738d88bcd45497e375addaa4971ac203b SHA-256: 6dec8e3a2fe96c9984294a32e12f98879bf968cb33f88d0dec2a53935c296b22
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at `https://ttraff.com/pify?keyword=cdisc+controlled+terminology+pdf`. The document body also contains this URL, suggesting a lure to trick users into clicking it. The ML classifier and heuristic firings strongly indicate malicious intent, likely for phishing or to download further malicious 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=cdisc+controlled+terminology+pdf In PDF document text
    • http://files.darknessisfalling.com/uploads/1/3/1/4/131407977/32babff4.pdfIn PDF document text
    • http://files.kinshipbarberlounge.com/uploads/1/3/0/7/130775588/kidit.pdfIn PDF document text
    • http://lejef.bodyvitalspany.com/uploads/1/3/0/7/130739561/pavogegojisomu.pdfIn PDF document text
    • http://www.xml4pharmaserver.com:8080/CDISCCTService2/rest/CDISCCodeListValueDecode/model/codedvaIn 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/1/0433/0687/7080/files/87678197609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/rofafurosobatekatixikor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2135/1587/files/56782447049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4324/8545/files/22538444361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5573/5203/files/12225693279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0868/7269/files/a_level_chemistry_revision_notes_aqa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/zepad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/66548367219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6353/2951/files/vixufixudor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0155/1771/files/zinuxugufugejodifeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0078/1208/files/29204964532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4590/3781/files/8424437022.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 6

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_off0000781b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x781B 5272 bytes
SHA-256: 77f3d73b248868688be4c0d5f556c6a6fdd8f716af258e6e870a130d1710f0e7
font_01_sfnt_off000089fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89FC 14884 bytes
SHA-256: 275e58997b02288d8040e85a6104da4eba76c453e1f6248da87ec74b09125289

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