Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a9255767ac84722…

MALICIOUS

PDF

39.4 KB Created: 2020-08-01 07:31:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c9eafed46ea9df5353f9a3f0c9e644e SHA-1: 4f40b4b8ff8b4b87325aa1865902424203705927 SHA-256: 1a9255767ac847227bc30f5108aa135d2f61b789d7daae120e8418372a9fc98d
274 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a mass external link farm, with one link pointing to a known malicious redirector infrastructure at 'ttraff.ru'. The document body also contains text related to 'webmail' and 'payment redirection', aligning with a business-email-compromise (BEC) lure. The presence of a password archive lure suggests the document is intended to trick the user into decrypting and accessing a subsequent malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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=webmail+wfhc+org In PDF document text
    • http://files.tlgconsultingvt.com/uploads/1/3/1/4/131438176/kapixisemapuxaxude.pdfIn PDF document text
    • http://files.bespokebewitched.co.uk/uploads/1/3/1/4/131408170/vobovinaga.pdfIn PDF document text
    • http://files.umvotibeans.com/uploads/1/3/2/3/132303035/buvowu.pdfIn PDF document text
    • http://files.ahaecker.com/uploads/1/3/1/8/131856131/jofelaxos-jatonemo.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/1/0431/3884/2779/files/18565122733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/61224018244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3853/8904/files/54969616362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1282/4993/files/9459073165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5173/7498/files/9647233913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9258/2293/files/95604242458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tawoxusabevesumaxev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/jejizonupuligenupibikati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/sexonof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7122/5502/files/73571404787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5838/8383/files/sixumuvaxadepasuku.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_off00005d68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D68 5364 bytes
SHA-256: 2bb0f2bd1c7070e452ef89e6af050ce3411ed4c83bfea6ed6cbd76b90372e9b5
font_01_sfnt_off00006f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F93 9796 bytes
SHA-256: afb52b7e1c351e881693462438a01d70e0f220566354b3e6bd938d3b88566cbc

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