Malicious PDF — malware analysis report

Static analysis result for SHA-256 25a5a3e80ca1fd21…

MALICIOUS

PDF

41.1 KB Created: 2020-08-08 14:01:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 04ab2ee7e3081093552c69ffddccea99 SHA-1: 7cffd1efb7f429ee60afccc7d8ff96b538ecfd97 SHA-256: 25a5a3e80ca1fd216e35ec6ced37f76c05abd59edfd0f81eff13bd66b8f8dd4a
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, indicating a link farm. The primary malicious URL identified is https://ttraff.ru/pify?keyword=%25C3%25A1lcoois+e+fenois+pdf. While no scripts were extracted, the sheer volume of embedded links suggests a campaign to drive traffic to potentially malicious sites.

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=%25C3%25A1lcoois+e+fenois+pdf In PDF document text
    • http://files.middlesexmotorcycle.com/uploads/1/3/0/7/130738993/669168.pdfIn PDF document text
    • http://files.catgiles.co.uk/uploads/1/3/0/9/130969465/7447235.pdfIn PDF document text
    • http://files.mattkempracing.com/uploads/1/3/0/7/130775400/d6f4f8a.pdfIn PDF document text
    • http://files.connectingmemphis.com/uploads/1/3/1/4/131453146/vuvonirawedusogexixi.pdfIn PDF document text
    • http://sopiwusi.18crossroad.net/uploads/1/3/0/7/130775320/ce29aa2ad70.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/1/0436/2344/8736/files/jubuworiniwekenuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/24556767833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4310/2618/files/92589377969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/bootstrap_4_classes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2823/3883/files/crin_o_medical_term.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/regional_indicator_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0316/6370/files/zuragikolet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6874/2040/files/mick_goodrick.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1649/3976/files/lanupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0090/files/bozakumekojig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1313/5774/files/10947100812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5390/8117/files/teguje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0410/8711/files/mcdonald_s_full_menu.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 7

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_off0000634f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634F 4856 bytes
SHA-256: f649f565832378080607e4897f4de6e5713dc50746cc6677998124c8183eb229
font_01_sfnt_off000073f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F1 10156 bytes
SHA-256: 989a7e882ca6d9e7c170f3e72765501d742663d66f90e03b8023b7185e3fea90

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