Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3bfcbb671666bd0…

MALICIOUS

PDF

42.1 KB Created: 2020-08-08 01:01:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 633ced83b9623b88498665c41f9ca088 SHA-1: abc81e65ae01d074d733bc42106d08d0a7afc587 SHA-256: d3bfcbb671666bd0c3a0345837c925471b57ff7d0d609a5c85fd836c85c9051b
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a book title and the URL for the malicious redirector, suggesting a lure to a phishing or malware distribution site. The presence of a link farm further indicates malicious intent to distribute or redirect traffic.

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=bastard+out+of+carolina+full+book+pdf In PDF document text
    • http://files.agdersymfoniorkester.com/uploads/1/3/0/9/130969874/e1fd89d.pdfIn PDF document text
    • http://files.villacasaolas.com/uploads/1/3/1/3/131398143/ab59eb.pdfIn PDF document text
    • http://files.ricotroostphotography.com/uploads/1/3/0/7/130775361/352127.pdfIn PDF document text
    • http://files.marcscabs.com/uploads/1/3/0/9/130969211/fananopeli.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/1/0433/8499/5991/files/shoprite_bursary_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6116/4697/files/72213360338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5890/5759/files/nafijajunigat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4414/3253/files/road_conditions_i_5_siskiyou_pass.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1863/9765/files/nys_drivers_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9109/1875/files/55130979069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/70857261686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/66270621725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5337/4874/files/96815850908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/42712994358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/8274340339.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_off00006733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6733 5404 bytes
SHA-256: ec1bcfd6c025e294c81ff9f967b36cd46f756cd1cea28b714dcd74813896fe25
font_01_sfnt_off0000799e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x799E 9860 bytes
SHA-256: e3a104d407543722c20a77949ecf71ac981c68c6622c234e2640d83ad72537ab

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