Malicious PDF — malware analysis report

Static analysis result for SHA-256 7af89872eaad9220…

MALICIOUS

PDF

43.5 KB Created: 2020-08-21 18:26:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49f01cce324a172bc3931bb6fdac273f SHA-1: ed3d560720708f7bcc6948f62209bd70ef49b711 SHA-256: 7af89872eaad922028f52535a6529d41ec74dc35b6211425abedb49bca206e72
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. This indicates a link farm or SEO poisoning tactic designed to lure users to malicious sites under the guise of providing academic papers. The ML classifier also strongly indicated maliciousness.

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=ecological+economics+principles+and+applications+pdf In PDF document text
    • http://fupaxafal.peacecitysoaps.com/uploads/1/3/2/3/132302780/fixozipegu.pdfIn PDF document text
    • http://files.nhfuneral.org/uploads/1/3/1/8/131856134/21f98aac5c3f8.pdfIn PDF document text
    • http://files.ososoaps.com/uploads/1/3/1/6/131636889/9ad99.pdfIn PDF document text
    • http://files.simplyequaleducation.org/uploads/1/3/1/4/131452961/a60d03c40cad96.pdfIn PDF document text
    • http://mowizu.drlindagedeon.com/uploads/1/3/0/8/130873851/lebinawi-kofisogenor-xenogodev.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/1/0433/0687/7080/files/demesudixagivok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6988/8920/files/clownfish_care_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8721/7319/files/95409465792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9151/5805/files/beautiful_akon_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1863/9765/files/rujenivobidonosidag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8634/7414/files/98934053057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9823/4270/files/22577445274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1282/8833/files/the_bro_code_barney_stinson_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8466/1407/files/nike_balance_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3720/2344/files/97930300410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/complete_qaseeda_burda_shareef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5554/6517/files/gosowum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0336/2973/files/rokenofimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1440/1697/files/bhojpuri_film_karan_arjun_video.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 5

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_off00006cc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC9 5432 bytes
SHA-256: 2fc0ed50ef89b602fc532874b628054b13c61705ee1c84e43c5928d2d91edc73
font_01_sfnt_off00007f29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F29 9768 bytes
SHA-256: b9eb1758e3f748c57d5b1073b8513ce319ddae30aefd64dbc71e9d49407dfb99

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