Malicious PDF — malware analysis report

Static analysis result for SHA-256 05bfa7e2c7822d7c…

MALICIOUS

PDF

57.9 KB Created: 2020-09-30 23:34:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 297922f608883dcd8d0bfbda5d5c0662 SHA-1: 5d5c0cfe7ceada7d155bb58b1c9d8cd38849a0de SHA-256: 05bfa7e2c7822d7c0e6f04edb64a8bce86f17dcf0c1db09fcfecbf6a38e8f0cd
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/strik?keyword=base64+decode+pdf+file+java In PDF document text
    • http://dutexa.familyaddictionrecovery.net/uploads/1/3/1/0/131070381/6813411.pdfIn PDF document text
    • http://xiputo.soldiershomestories.com/uploads/1/3/0/7/130739206/wafiju.pdfIn PDF document text
    • http://badejat.gilipalms.com/uploads/1/3/0/7/130776255/8a17aa4945.pdfIn PDF document text
    • http://wuvewuv.milwaukeephotobooth.net/uploads/1/3/1/3/131380868/rowum_totuluzi.pdfIn PDF document text
    • http://files.midnightriderbrts.org/uploads/1/3/1/4/131453494/fononetif-gokuf-wizoleja.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e9fc9c4-d770-4cae-96dc-fba8d3ec7170/45400312613.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6775b3e-d3d1-4459-9e71-0bd6f7102b6b/gisipage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ed66af2-d4b1-41ba-b254-db41e9eab9d3/pifikesabazuxikugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbeb25ad-630b-4d90-bee2-5063ae9aeaab/47338329206.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17988674-7a0c-4558-ba4d-d0db1ec169b7/29548556797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/8326/3141/files/bovekarigigijawanesikuvug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3183/0421/files/rock_forming_minerals_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5879/7471/files/muvuditixukiwenovovuf.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_off0000a20c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA20C 5480 bytes
SHA-256: b6731a122b9fd95e66bd3b64549fe1baa3ddbce69235c44a0ebb31b6056e487c
font_01_sfnt_off0000b4db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4DB 11200 bytes
SHA-256: 6c23ad7d668adb27eb3fd9d4a4936e916518963448580f93fa56789af2d8c938

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