Malicious PDF — malware analysis report

Static analysis result for SHA-256 c654c2273c24bbf7…

MALICIOUS

PDF

63.5 KB Created: 2020-11-05 03:45:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8c2e7d358eeead845bd3f1573d66fe42 SHA-1: d4d04834a907f82c39e746acd0e69608f7a7d8cc SHA-256: c654c2273c24bbf75ea490748727bf123aae0bd4e3ca46b3373badf4af4372ab
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.cc/123?keyword=world+atlatl+association+facebook In PDF document text
    • https://cdn-cms.f-static.net/uploads/4445118/normal_5fa034c68f3e8.pdfIn PDF document text
    • https://bubixoduxufito.weebly.com/uploads/1/3/1/0/131070588/teromot.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/modasofibekozov-mifowatefovovo-mogeboluvawoxu.pdfIn PDF document text
    • https://nifadajenekipib.weebly.com/uploads/1/3/4/3/134305148/duxiluju.pdfIn PDF document text
    • http://waa.basketmakIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ragejufa/design_of_the_blended_wing_body_subsonic_transport.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fc824a9-734e-48dc-9c17-e4238749a32d/wogitazesosipomusig.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/papa_pizza_games_cool_math.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60120800-9482-4a75-a09c-68e6905e2d8c/gudumaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af11817c-d23b-4c12-8f60-496efe1fa101/11178780323.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44a008b9-df63-4db1-92cd-a06422f5bb3a/19th_wedding_anniversary_gifts_traditional.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9316a0f8-afcf-4fe3-83ea-cbf1e82cc520/65192654680.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/a_guide_to_crisis_intervention_kanel_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/729413d2-4eb2-4c94-b7f2-52fb3feaf82a/jefavesofalisumajobotoda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/971d31f6-0702-4090-b928-a2911af06a27/sympathy_for_the_devil_solo_tab.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_off0000baec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAEC 5232 bytes
SHA-256: 926c26c4557d33e9aa6a28757d70692e3b3f63127ab71c01f41d56d7df2b2398
font_01_sfnt_off0000ccd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD5 10560 bytes
SHA-256: 3a2ffe02801512c71fa40b4509829d3ecb3dba582e268174f87592137a0ab203

Open this report in the interactive analyzer, or submit your own file for analysis.