Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf4e55a91f6d0ead…

MALICIOUS

PDF

56.0 KB Created: 2020-08-19 09:55:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c5cdb3807b1a67c4a61a5c05fc3ea27 SHA-1: 44042fcacb4669b8a0da6aac235f7b50b3ec426b SHA-256: bf4e55a91f6d0eadd6cfac7f953d994f89cf9b28476c5ce3e123078c6d0e5d97
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing indicating a 'PDF_SEO_LINK_FARM'. One of these URLs, 'https://ttraff.ru/pify?keyword=baghban+movie+title+song+free', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to potentially malicious content or a phishing attempt. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=baghban+movie+title+song+free In PDF document text
    • http://files.dermatologyequipmentstore.com/uploads/1/3/1/1/131164567/tiretafirazapum-lewafinuzebaxe.pdfIn PDF document text
    • http://files.lquertportfolio.com/uploads/1/3/0/8/130814308/zuzibeditaxig.pdfIn PDF document text
    • http://files.mayahabian.com/uploads/1/3/1/0/131070469/48190abbd4.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/1/0433/4501/9045/files/night_figurative_language_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6737/5770/files/lovelepevizefitolobowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2043/5112/files/software_project_estimation_document_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4842/5889/files/91192017080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4718/1718/files/beletemipekewowadafis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/mugodaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1401/9496/files/firedojet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6372/0613/files/demonstrative_pronouns_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8777/4374/files/how_to_read_balance_sheet_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ligumugazawebamupewav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8923/1000/files/31917210411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9358/9142/files/wizipipabajenefise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0492/7905/files/28147457529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7573/1607/files/waveposa.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_off0000924f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x924F 5432 bytes
SHA-256: b9dbac6d85a9c21d64b1e57e658e7a1605345eeb8557f7e462c43af5f30e7135
font_01_sfnt_off0000a49e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA49E 15120 bytes
SHA-256: f216f4e02616d89f5d885c0d15fedff270f32ae23c435583aa80c901c614b8b8

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