Malicious PDF — malware analysis report

Static analysis result for SHA-256 59a8b236c7223686…

MALICIOUS

PDF

40.2 KB Created: 2020-08-11 19:09:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e883939a4a5b300207a51cb4ee585e3d SHA-1: 076dec73c0f3320de40aa203d7d663d7de9bdbd9 SHA-256: 59a8b236c7223686f1cbfcc4bb3c40307f485bff9c609ed93332e6b9195f82ef
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.ru/pify?keyword=metabolismo+de+carbohidratos+en+bovinos+pdf, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains references to the malicious URL and other embedded links, reinforcing the attack pattern.

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=metabolismo+de+carbohidratos+en+bovinos+pdf In PDF document text
    • http://files.rosemaryswords.com/uploads/1/3/0/7/130775085/fuvowuxeruzesi.pdfIn PDF document text
    • http://files.vernonsquaresurgicenter.com/uploads/1/3/0/8/130814052/baxowizelawopuxoteve.pdfIn PDF document text
    • http://files.missmollymayer.com/uploads/1/3/1/3/131380850/1c5a13b9.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/1/0428/9835/8432/files/zutazalurofesavasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/xesakulan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/gegobiginalidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/63605197529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1374/1472/files/vixuzukoporisojapaxak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5496/4637/files/wunesedekibevaxariji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5572/4197/files/meningitis_por_staphylococcus_aureus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/solutions_manual_test_banks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4923/7145/files/35856686459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6997/2384/files/21305000339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/28341185510.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0C 5600 bytes
SHA-256: 39012694f38e2a7791bd4c187b92bceac942e0fbb9369905b6ac45a9bd75f5ab
font_01_sfnt_off00006ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFA 10532 bytes
SHA-256: 297b7c2b9656486837875ee5ba6826f7a836a2ea1d15939ac53273779d7c2ad4

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