Malicious PDF — malware analysis report

Static analysis result for SHA-256 340bf6a28c088de3…

MALICIOUS

PDF

36.4 KB Created: 2020-08-19 09:23:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 013a7037476fc04ec81daa89ee736097 SHA-1: 67a2fdc7641dfc4d3be538a46cd9658d15147de8 SHA-256: 340bf6a28c088de3cc210174c04ca0871616fe749db3fd7d93f265425bdce248
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service that is known to host malicious content. The document body, though heavily obfuscated, contains a string that appears to be a lure for 'Bhojpuri dj song 3gp mp4', likely intended to trick users into clicking the malicious links. The ML classifier strongly indicates maliciousness, and the presence of a redirector link confirms a phishing or scam attempt.

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=bhojpuri+dj+song++3gp+mp4 In PDF document text
    • http://files.alanawynn.com/uploads/1/3/1/4/131483584/diremebupete.pdfIn PDF document text
    • http://kuzomul.wildandfreewellness.org/uploads/1/3/1/4/131453870/29034b46d9.pdfIn PDF document text
    • http://rawajaw.btmamusic.com/uploads/1/3/0/7/130739835/pilojebi.pdfIn PDF document text
    • http://vurezov.rusticdesignsflowerfarm.com/uploads/1/3/1/3/131383483/fufibenodesuro.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/1/0434/2644/7525/files/31850189390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2396/5079/files/tenamat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8544/6822/files/pancreatitis_dieta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/39996500769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/42635132319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0066/8065/files/54164940868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2222/0439/files/how_to_program_directv_remote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9697/7051/files/les_mills_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9381/9541/files/58218997979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/fundamentals_of_flight_richard_s_shevell.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6281/9990/files/13068479810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8113/8343/files/8199912109.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 1

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_off00004ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ED8 5508 bytes
SHA-256: 56941acc18611f414d78f180c098bdc8fed8f92fb59470ba4cb97277c9f0e941
font_01_sfnt_off00006176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6176 10692 bytes
SHA-256: 11ff4763762a8bd756405026d0c3e5b4407047e09fb605e846a7132b189e0fc8

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