Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a08200b79d79e56…

MALICIOUS

PDF

48.2 KB Created: 2020-08-11 06:59:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1aaf4b573bbe995f4d1ee0aae79d4635 SHA-1: 0c9300a845d39bd225c3641c279619f700cec016 SHA-256: 2a08200b79d79e566b36ce440c9116c199321e1cd8ce39ca76686e2b577d504b
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link to 'ttraff.ru' and a large number of external links, indicating a link farm designed to distribute malicious content. The ML classifier strongly supports the malicious verdict. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing its malicious intent.

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=corel+cdr+to+pdf In PDF document text
    • http://files.ohsoretrovintage.co.uk/uploads/1/3/1/3/131382226/5638619.pdfIn PDF document text
    • http://madon.sjdmortgage.com/uploads/1/3/2/6/132681352/biruwevurunefov_vasufa.pdfIn PDF document text
    • http://tabibepo.annasounds.com/uploads/1/3/1/3/131383651/7405561.pdfIn PDF document text
    • http://files.covertsrustproofing.net/uploads/1/3/2/6/132681823/6772462.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/1/0432/7102/8896/files/69474560289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9890/6528/files/1558281670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9870/files/4038537545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1460/9303/files/62978287586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3834/3322/files/zujekazudubokiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7969/5517/files/anarchism_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6142/7876/files/mathematics_grade_10_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/84958183393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/faganikatitose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8701/7637/files/basics_of_c_programming_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2417/7557/files/50700909321.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off000064ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64FF 4664 bytes
SHA-256: 56fe2e38df458e63f8e5eb549798746d1a4d12b6a733e3201319dc1dbadfac26
font_01_sfnt_off000074ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74EA 13112 bytes
SHA-256: 46efbfe3e3bb4745bde593b690167fc42ed76a8b9bff2cf6acd35f26baff0a88
font_02_sfnt_off00009f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F4A 16076 bytes
SHA-256: f283a563ee48c68d0f210b91d059b93f2da97875a4894e08c15e1f8ed5b97a7d

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