Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9a1abf0404cb936…

MALICIOUS

PDF

36.4 KB Created: 2020-08-14 21:17:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 977fd58e79a61a7b3787f843833f11c4 SHA-1: 97cfd1f5808ce7c54509d55de675ed0110076bb2 SHA-256: c9a1abf0404cb936e60968bf0ac0bde4840c6bc4c405f44293e0f13dfc556e97
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=edgeswitch+24+lite+datasheet'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0432/3724/5086/files/98229770395.pdf'. The ML classifier strongly flagged this PDF as malicious. The document body, though partially corrupted, contains the target URL, reinforcing the malicious intent.

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=edgeswitch+24+lite+datasheet In PDF document text
    • http://files.impactdesign.co/uploads/1/3/1/1/131163634/kages-xolurumixen-zisuzoxa.pdfIn PDF document text
    • http://fitop.sjchocolates.com/uploads/1/3/1/1/131163494/vofevefoteku.pdfIn PDF document text
    • http://files.sacredspacesyoga.com/uploads/1/3/0/8/130814127/e5c9022b.pdfIn PDF document text
    • http://files.the32nd.org/uploads/1/3/2/6/132682758/pisopilakuxaw-zudozezulebij-lexirataka-dopovete.pdfIn PDF document text
    • http://files.phoenixtherise.com/uploads/1/3/2/6/132695493/0645c2.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/1/0432/3724/5086/files/98229770395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40323832667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6251/8182/files/36360023529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0711/3373/files/calculus_early_transcendental_functions_4th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5507/7790/files/legal_aspects_of_healthcare_administration_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7141/4167/files/nadifekarubupok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6893/9672/files/42865461322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7346/0631/files/lalupezijoxifon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3690/8439/files/98937696459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0340/3678/files/72567729661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/fekidexogufi.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_off00004caf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CAF 5376 bytes
SHA-256: 36934dd86271b9613aa93dd8e55100402fd46c93731c7ee63e2407b7b36178f5
font_01_sfnt_off00005f13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F13 10624 bytes
SHA-256: 1c26c1d913aeabc59d2c30d789bf554a4ca4e4c4e393e5c56b3a69344c07558f

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