Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cf9fab3230ef746…

MALICIOUS

PDF

41.1 KB Created: 2020-08-03 11:40:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 89bdfd0b8c89362785f46652d2595153 SHA-1: ad3f7104c7d5f3120bf513165f5520c934e7206d SHA-256: 6cf9fab3230ef7466b6f94c20c1674b48b4ba76ff4ec55b45af18bd7ea1c379e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=anandamayi+ma+pdf+espa%25C3%25B1ol'. This URL is presented as a lure for free PDF downloads, aligning with SEO-based phishing tactics. 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=anandamayi+ma+pdf+espa%25C3%25B1ol In PDF document text
    • http://files.darkhorsesaddlery.com/uploads/1/3/1/4/131453068/d96e044837fb.pdfIn PDF document text
    • http://files.kelleycarney.com/uploads/1/3/2/8/132814024/1911118.pdfIn PDF document text
    • http://files.columbiadentcenter.com/uploads/1/3/0/9/130969910/jubegonakajij-desagomabof-sateno-pikilolot.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/1/0433/2116/3941/files/novinenenak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50537202024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/51275661316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5637/2641/files/26302216830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51220099535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5109/0071/files/ninop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/musijuwupopat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3537/7307/files/xejuweju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9988/9569/files/weviwolus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasidobedibugamis.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_off00006337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6337 5392 bytes
SHA-256: 7dec2e19f2baa20e959fe98ef92bc92c3e1a6c72e4f955c4f74477ffc34b4383
font_01_sfnt_off0000754f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x754F 9732 bytes
SHA-256: ba7fceef3419ffd02b7d07355c32685c3809428422bb8b426e6cb2308405436d

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