Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab8233fc94c1bb8…

MALICIOUS

PDF

64.7 KB Created: 2021-01-28 20:30:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 03be6f538fdce8db01f6c48e5242b0e0 SHA-1: 99a88f9746803736fa118d0943ec9b8da38902f0 SHA-256: 6ab8233fc94c1bb80f5dbaede978016e3ab8c4918a8ad4ff87b35d3409efd7a7
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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.
  • 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://trafftec.ru/wb?keyword=earn%20to%20die%202012%20part%202%20exodus PDF link annotation
    • https://cdn.sqhk.co/nukunudakiju/FieqhiN/19765172716.pdfIn PDF document text
    • https://mavuzoxawajike.weebly.com/uploads/1/3/0/9/130969593/suxer_xurozuzas_nidak.pdfIn PDF document text
    • http://zikemipirelojo.22web.org/drew_lock_scouting_report.pdfIn PDF document text
    • http://takotonefajale.22web.org/xizebebofenozeneb.pdfIn PDF document text
    • https://narodejezagog.weebly.com/uploads/1/3/3/9/133988416/tanuvuna.pdfIn PDF document text
    • https://laboxowoxom.weebly.com/uploads/1/3/5/4/135400847/tutizupuxogurux.pdfIn PDF document text
    • https://cdn.sqhk.co/fekurisakez/hgjtgga/photomath_solver_online.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/93d5377394133.pdfIn PDF document text
    • https://rumikupim.weebly.com/uploads/1/3/5/3/135310872/1581442.pdfIn PDF document text
    • https://kidamevu.weebly.com/uploads/1/3/1/4/131437276/4c5d7310a642.pdfIn PDF document text
    • https://bufudelazevel.weebly.com/uploads/1/3/4/7/134734798/1846169.pdfIn PDF document text
    • https://kefufavara.weebly.com/uploads/1/3/1/4/131407952/ab7269d.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/jedaxopopuko/gulidawerobak.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/wagojufuditin.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/edelbrock_carb_tuning_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/fawedujomerovatiregizu.pdfIn PDF document text
    • http://sowawobajomo.rf.gd/jnc_guidelines_for_hypertension_2018.pdfIn PDF document text
    • http://wozaxanakix.epizy.com/wabawu.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_off0000c36b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC36B 5272 bytes
SHA-256: 7a5d4d05b534fd3e7a04a53fecfd2027039ce0b598b3b9ad6c3e9a8fa4f4ec3a
font_01_sfnt_off0000d56d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD56D 9496 bytes
SHA-256: 3d51fdee78d4af947a90b5a22503b8262e6fdef47174f345938c25d31a1b37cf