Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3f6f04f3a0cec9…

MALICIOUS

PDF

40.2 KB Created: 2020-10-03 15:04:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 4b45571652c52a9bc0ce2d909cb46abd SHA-1: 7f4eb2425839c7cee127839044673492e3110995 SHA-256: 4e3f6f04f3a0cec9dee1e3b01cfdaabb4b198b558a075d0e04fa2b04fd6236af
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://ggtraff.ru/strik?keyword=tardis+blueprints+pdf In PDF document text
    • http://xonegag.3lmboutique.com/uploads/1/3/1/6/131636725/4017351.pdfIn PDF document text
    • http://files.longmontsistercities.com/uploads/1/3/2/6/132695280/8747764.pdfIn PDF document text
    • http://rotopi.stnickskenosha.org/uploads/1/3/1/0/131070934/1421483.pdfIn PDF document text
    • http://vojil.andrewcollinsart.com/uploads/1/3/1/0/131070356/9734802.pdfIn PDF document text
    • http://nefopi.gradeeight.nestmusic.org/uploads/1/3/0/8/130813528/3685172.pdfIn PDF document text
    • http://jabup.seadafineart.com/uploads/1/3/0/9/130969707/4395081.pdfIn PDF document text
    • http://files.edivea.org/uploads/1/3/1/4/131406140/kibeze-dodiwalebofagow-jowiwodawibit-kalibitalo.pdfIn PDF document text
    • http://files.parfewax.com/uploads/1/3/1/6/131637063/09ab42b1.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/1/0438/4073/3341/files/alora_corporeal_beast_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2943/6315/files/sorry_for_the_late_response.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6880/7586/files/apk_minecraft_ios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1505/3213/files/abn_amro_credit_card_opzeggen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1323/7667/files/87094333786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/lowowosadaburogabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2124/8923/files/hand_and_eye_of_vecna_5e_stats.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE6 5124 bytes
SHA-256: 94940fd4593f21e53bb5d445c1b4280f90bd33c761c9688d9c9302d0937e3714
font_01_sfnt_off00007155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7155 10064 bytes
SHA-256: adcd6834de7e85f4fe2328745596cba5a910533911b22d2022f1805c2a6d34d5