Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb09731a91866fa6…

MALICIOUS

PDF

41.0 KB Created: 2020-07-30 18:40:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8414138a8c31667656ca9610841ba94e SHA-1: ce742c5a22d6f91a788cc5a6e00721d3662f5477 SHA-256: bb09731a91866fa6b05db4a0ec5c636998ac5516a99c452f662acab258bcaaec
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to ttraff.ru. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body is heavily obfuscated and appears to be metadata rather than user-readable content, suggesting the primary malicious function is the embedded link.

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.ru/pify?keyword=bls+pdf+2020+espa%25C3%25B1ol In PDF document text
    • http://files.brockhousenurserystalbans.co.uk/uploads/1/3/1/4/131483249/wenep.pdfIn PDF document text
    • http://files.thermotrix.com/uploads/1/3/1/4/131407734/12612e9.pdfIn PDF document text
    • http://files.sailingphoenix1.com/uploads/1/3/1/3/131379591/9569734.pdfIn PDF document text
    • http://files.accentremodeling21228.com/uploads/1/3/1/3/131380992/noluvedalabeze-bokal.pdfIn PDF document text
    • http://files.alessiadana.com/uploads/1/3/2/7/132740606/dikalemojepemovimu.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/1/0433/4914/7803/files/88587768362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zavoriduxosijalas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6401/6539/files/65769260303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6970/2306/files/71444779462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/71741757271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/96671658868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nulexukiwogefera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8089/8973/files/28825354573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zovoxumaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/ziwidezuzobapuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5586/5242/files/27722818843.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 8

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_off0000611c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611C 5028 bytes
SHA-256: 62f6f6bca646a7d834a608258a47bc2f2e0961dbed464d228a6d847bd74ae8a7
font_01_sfnt_off00007232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7232 10144 bytes
SHA-256: e0e04a1d3676dae49d96c9fe0f02da0bca0ac0f370caaface4e7fa0639cc7c2e

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