Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f92b2ac36acac8…

MALICIOUS

PDF

77.1 KB Created: 2021-02-19 13:14:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b8c19a832a33ca330539ec60fedd0855 SHA-1: e99007e0fdf1bf28c7e69c548c709bdf5af9ace4 SHA-256: c6f92b2ac36acac8e350ff867626cf217beae0418b76a5c2f31f145d0b70e376
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://seumenha.ru/strik?utm_term=2012+chevy+impala+ltz+specs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415546/normal_601fee4ac8007.pdfIn PDF document text
    • https://rilawexiretik.weebly.com/uploads/1/3/4/2/134267086/xesulabilorigoni.pdfIn PDF document text
    • https://nudegono.weebly.com/uploads/1/3/4/6/134682657/14f529683b5c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451737/normal_60091ee2889fb.pdfIn PDF document text
    • https://totuseki.weebly.com/uploads/1/3/5/3/135322554/rimomira.pdfIn PDF document text
    • http://jewuzalozegeso.iblogger.org/24408820028.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375514/normal_60246b34e47a8.pdfIn PDF document text
    • https://cdn.sqhk.co/zoluwumenad/dyjgokv/light_bubble_wall_fish_tank.pdfIn PDF document text
    • https://vakogupomuniv.weebly.com/uploads/1/3/4/6/134610568/9175686.pdfIn PDF document text
    • https://fipogelijemebu.weebly.com/uploads/1/3/1/3/131398193/9659357.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wizedumi/30692596154.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/dolijoliwafedubof.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/executive_coaching_session_plan_template.pdfIn PDF document text
    • http://setonan.rf.gd/cavatine_trombone_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/40799887702.pdfIn PDF document text
    • http://sogaviwezed.rf.gd/97705569589.pdfIn PDF document text
    • http://fofifalog.rf.gd/pipekuwa.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_off0000ed26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED26 5520 bytes
SHA-256: c13ff8d0dbd2706cd933c94d3853fa2f073f9b11ff165cec0a391d2bb9aa84b2
font_01_sfnt_off0000ffe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE0 11524 bytes
SHA-256: a24690820505929aef8dc0f3f649c33a152793facf9c35ecc27b58cc7fd1e3b8

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