Malicious PDF — malware analysis report

Static analysis result for SHA-256 6193e34444729a39…

MALICIOUS

PDF

84.3 KB Created: 2020-07-29 20:20:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31a70593f3f09baf07637a41329cec65 SHA-1: 611367607286494c691482170541af5984c8855c SHA-256: 6193e34444729a3934e0a361f6a7508c3720a613f41295beee933f731ea1566e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating redirection to known malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. The document body is heavily obfuscated, but the presence of numerous links suggests a link farm or phishing lure.

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=depression+criteria+dsm+5+pdf In PDF document text
    • http://files.mjtravelaroundtheworld.com/uploads/1/3/2/6/132681951/baligixuto-jexifatarez.pdfIn PDF document text
    • http://files.smhulse.com/uploads/1/3/2/6/132681053/3689513.pdfIn PDF document text
    • http://files.pathportfolio.com/uploads/1/3/2/6/132681891/tawixubulazob.pdfIn PDF document text
    • http://files.osteomyelitiscenter.com/uploads/1/3/2/3/132303010/4165838.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/1/0433/4950/8250/files/ropajonewododumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1504/4252/files/50641628137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/38408472845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gigogew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/27297544028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4776/4636/files/mujuluwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2775/1321/files/kazax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7468/0987/files/tebarudurewupor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3128/8216/files/jolumekajori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9985/7823/files/26986851600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5817/5906/files/76118181187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9679/2478/files/mepumidijapavapikanuxubeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8316/0999/files/juvewenenafagam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0497/6548/files/28314793591.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_off00010dd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD7 5180 bytes
SHA-256: cc38bccbb56c68d2e6880d916f2450c167ab68ecfdfe7d3a85fb60648cf7b8dd
font_01_sfnt_off00011f59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F59 10608 bytes
SHA-256: 7880787ae8e645c8c0841edec27a7d0a2e535b0ad61f3bea39c677b93d63008c

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