Malicious PDF — malware analysis report

Static analysis result for SHA-256 191e87151734f67e…

MALICIOUS

PDF

45.0 KB Created: 2020-10-21 19:02:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: b97ad6ff0e347a76ed0d13bcb4d218e9 SHA-1: a5a70d268fdab800f5248e4a6a2edb0aad2f9701 SHA-256: 191e87151734f67e4bf8a945fe4fd126bc0db9f06792fc60a7dca5f036e0a501
194 Risk Score

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://gettraff.ru/wb?keyword=funciones%20de%20los%20nervios%20craneales In 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/1/0432/2174/5823/files/suwif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2454/0071/files/tevofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9315/0875/files/the_underground_railroad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2417/8072/files/50578392404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7673/9764/files/turezaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5321/9479/files/stranger_pbt_501_circuit_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6828/4319/files/9682513698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9087/9667/files/vokuwiviboguves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9725/8136/files/wovataseruresepajalik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/1296/4519/files/88955684535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/9370/4863/files/6197200948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5865/7430/files/epic_summoners_2_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3365/7495/files/tri_county_health_cross_coty_fl.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dd4d870-79d3-4fda-be24-058c812be46d/fanofedawesowuno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2077458-4da1-4fbe-a49c-efbbb5bdbf89/xoniri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1841d27b-3a9b-4bd1-8bac-0d338d13bac1/jufovumuwezojifujax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2eb369cf-ca67-40ae-90d0-fa11b0a12c2b/58949941136.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92a66752-6275-4abe-966a-ca6f5bc26b96/xifepixefefaruzubux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6100bc9f-46e7-4a92-9949-9f73da4335b5/gifuvovopoja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35b7686e-e528-4894-94a2-8a98b54e80ab/20341899931.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C5 4948 bytes
SHA-256: d7545f9dfde8dd9cd56839dbfca2bcd0a481427a20de7c36491eaea19578f24a
font_01_sfnt_off0000769c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x769C 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00007f29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F29 11704 bytes
SHA-256: c631f74f3eab97d68b727b0522886f68fbd7c1898c164f3637b4bbe60157afe7

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