Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bfb944104a1411f…

MALICIOUS

PDF

63.4 KB Created: 2020-08-06 22:15:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a39cedb30ffb6de034c243495944db79 SHA-1: b1b936c4509457acc21b1d26d3f593701bfd3097 SHA-256: 5bfb944104a1411fe76f22a8551ec9c37d47e99394d2ba63f40000c6248ad8fb
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, including a critical finding for a PDF redirector link. The embedded URL points to 'ttraff.cc', a known malicious redirector, which is likely intended to lead users to a phishing or malware download site. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=preparation+of+activated+carbon+from+rice+husk+pdf In PDF document text
    • http://files.thechocolatehousedc.com/uploads/1/3/1/3/131379719/worotopomulem_xutuniditobavud.pdfIn PDF document text
    • http://files.spiritblossomspsychics.com/uploads/1/3/1/1/131164250/tapan.pdfIn PDF document text
    • http://files.brockeyinsurance.com/uploads/1/3/1/3/131379049/9802735.pdfIn PDF document text
    • http://files.mw-earrings.com/uploads/1/3/2/8/132814958/1566487.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/1/0429/8748/7385/files/rest_api_doc_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2576/7320/files/62781330672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/82307178276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4338/9597/files/xupezukuzomizini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3048/5915/files/bepejutuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5732/2903/files/highway_engineering_and_traffic_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/33173387963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0485/3402/files/xurakasapogiwef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/vewufevovojabeniliv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/95270780462.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 7

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_off0000b862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB862 5628 bytes
SHA-256: b5389e7b51743fff2e59b6fc10130d23279ae635c479bef27901e73837793272
font_01_sfnt_off0000cb5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB5D 10740 bytes
SHA-256: 4f09227bc85096474d461bfaa6abd5c1808ba0112b41a0c626828cc902839e4c

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