Malicious PDF — malware analysis report

Static analysis result for SHA-256 6365473c2006e609…

MALICIOUS

PDF

58.2 KB Created: 2020-08-12 05:32:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 08d0fc4a175d1597a2f5b172afeac045 SHA-1: 264543a5bf97f8f20eb5d274cb7d0fe5d5bdf280 SHA-256: 6365473c2006e609948578b806d4ba33251e749f6969e0d737472870f0da1f9a
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 known for malicious activity. The primary redirector URL is 'https://ttraff.ru/pify?keyword=algorithmics+the+spirit+of+computing+harel+pdf', which appears to be part of an SEO link farm designed to phish for downloads. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aiming to redirect users to malicious content.

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=algorithmics+the+spirit+of+computing+harel+pdf In PDF document text
    • http://files.clclockport.org/uploads/1/3/1/8/131856860/c3f819ad8f.pdfIn PDF document text
    • http://mexuvi.theproseccoproject.com/uploads/1/3/0/7/130775607/buguzewageko.pdfIn PDF document text
    • http://susaja.e4nursingandhealthcare.com/uploads/1/3/1/4/131453645/6379928.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1733/1100/files/10191191904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5263/8116/files/kawale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7263/4533/files/xibakaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4680/5404/files/43885837989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/95952191487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7155/3189/files/dujosulijazemezonar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasebiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0844/8920/files/52817137384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8638/0197/files/naturisirigot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/jk_bank_calendar_2020_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0394/4853/files/65542677636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5859/2934/files/tactics_for_toeic_test_1.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9791 5440 bytes
SHA-256: e46d59ae4e36b018ec513428827d2ba83316d8538477524afed314aa8d55f428
font_01_sfnt_off0000a9e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9E8 10380 bytes
SHA-256: fd88bfc93aafcf6a9444f8ce9bf9f200d21d2cce3b8d1145f0c86f8dd450ee20
font_02_sfnt_off0000cd72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD72 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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