Malicious PDF — malware analysis report

Static analysis result for SHA-256 972c3efe05ef78bb…

MALICIOUS

PDF

47.0 KB Created: 2020-07-28 18:09:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1c8d6ea9e0248a2960065b882b86fa0 SHA-1: 59861a32b2ac70c1678c439e39ab4c3368bf536d SHA-256: 972c3efe05ef78bb36d0066138c47f5c96f13c5fe0dfb7f2b5d3ae6ba3d02220
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to a redirector service (ttraff.ru) disguised as tour information, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, and heuristics confirm it links to known malicious redirector infrastructure and hosts a link farm. While no scripts were directly extracted, the PDF structure and embedded links suggest it's designed to lead the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=best+guided+tours+of+london+and+paris In PDF document text
    • http://files.racingbikesweden.com/uploads/1/3/2/6/132681295/zakipod-piwitim-mudomili-gojisegazokafig.pdfIn PDF document text
    • http://files.westsalemtitansbaseball.com/uploads/1/3/1/3/131379485/podefovepowatuf-badin.pdfIn PDF document text
    • http://files.partoencasamujeressabias.com/uploads/1/3/2/6/132681901/4725028.pdfIn PDF document text
    • http://files.equinoxsupplements.co.uk/uploads/1/3/2/8/132814611/faxewunoralaj_rimapujalema_ganarawezutetuk_vowidimot.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/1/0437/8384/8097/files/pejunaxatefabetinufeme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/41063612761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1571/6516/files/relowebajomopipogases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6843/2288/files/remuletovateropelilegaxit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/vajepuzasoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7325/7116/files/disezuxoxawobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4590/3781/files/davomuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9163/8934/files/6268302418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/kijovawakigulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/65277170034.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_off00007a19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A19 5140 bytes
SHA-256: 8b4082aa976df1c2ff5055f860286f327d74b8835bfba90ea330f3b814c0f594
font_01_sfnt_off00008b9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B9D 10596 bytes
SHA-256: e0f1609a105ac3dce3c51bdc4fe57b78bd77de5a93eb7756aaab7df652f94f8e

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