Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ca8adf4508c5865…

MALICIOUS

PDF

53.0 KB Created: 2020-08-20 19:33:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d944b3fe2210cfc8ec7fa5d51e771118 SHA-1: f3ff0d6d2db0815c165490770ed562052ed380fd SHA-256: 3ca8adf4508c586597cfbe8d072a9bd09bc493b6c23dda6bed9222738816ebb1
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=disable+listen+on+android'. Additionally, another critical heuristic indicates a PDF link farm, suggesting an attempt to manipulate search engine results or distribute content broadly. The ML classifier strongly flagged this PDF as malicious. The document body contains the same malicious URL, reinforcing the redirection attempt.

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=disable+listen+on+android In PDF document text
    • http://files.pinegrovecogop.org/uploads/1/3/0/7/130775515/29ad3dfe7ef8f87.pdfIn PDF document text
    • http://files.chennaishiayouth.com/uploads/1/3/0/7/130740589/joxax.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/1/0434/2707/0104/files/92818433618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1615/7344/files/descargar_50_sombras_mas_oscuras_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3419/7666/files/lorodoginet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6693/0840/files/ccna_1_practice_skills_exam_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/merge_gratuit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3526/1085/files/medical_mycology_laboratory_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3577/0535/files/mofadagezepujufojonuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/1057/5771/files/autocad_plant_3d_2011_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/8169/8199/files/day_by_day_armageddon_beyond_exile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9793/9349/files/bad_habit_ben_platt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4273/3221/files/wawofafalode.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_off000092ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92AD 4960 bytes
SHA-256: 5a317b52c36e3df10e5bdc5793dabeb46c4f456a9b6c3658833849ee95c0a088
font_01_sfnt_off0000a388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA388 10420 bytes
SHA-256: 89d2ec21182add0cfa379ec413cfca1f1d3cd62fb0ceb00f93cb29595a3c7354

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