Malicious PDF — malware analysis report

Static analysis result for SHA-256 92b373b57aab07cd…

MALICIOUS

PDF

73.8 KB Created: 2020-12-25 21:30:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0cab594cd66ca1ded1732ee7ef4d119b SHA-1: 4074e78ba2e4f373192d0a5fe671c06e51c09d51 SHA-256: 92b373b57aab07cda27709afb2fac029235dde82a532a02beb20a263c6658e86
194 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical ClamAV detection and an ML classifier. It contains embedded links pointing to known malicious redirector infrastructure, specifically 'https://ggtraff.ru/strik?utm_term=word+wow+seasons+more+wormhole', which is associated with SEO-based phishing lures. The document body, though heavily obfuscated, suggests a theme related to 'word wow seasons more wormhole', likely a pretext for the malicious link.

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
  • 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.
  • 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?utm_term=word+wow+seasons+more+wormhole In PDF document text
    • https://cdn.sqhk.co/tixelila/hCGifPX/hp_smart_app_fur_windows_7.pdfIn PDF document text
    • https://cdn.sqhk.co/poxufape/gBWGhcg/47262682652.pdfIn PDF document text
    • https://cdn.sqhk.co/nerenina/icheXjh/52269592800.pdfIn PDF document text
    • https://cdn.sqhk.co/mivesumor/hdQha67/lyrica_anderson_ig_cookie_monster_picture.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415544/normal_5fc16a3c97de5.pdfIn PDF document text
    • https://cdn.sqhk.co/jumifokujuje/igjgihj/mortal_kombat_11_ps5_price.pdfIn PDF document text
    • https://cdn.sqhk.co/gefewivurov/ggBhggf/hedgehog_affair_second_rush.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/2649fe82-b8bc-4fcb-bd73-e323b3ba987d/arpspoof_couldnt_arp_for_host.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/kajininep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9f95985-e47e-4c32-82d8-d3f859d8a4d5/escape_from_gringotts_ride.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4722b91-3e1b-458d-8e4d-c985940ea551/marvel_puzzle_quest_coin_hack_no_survey.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/tanevarazagupipezifefev.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/esko_artioscad_16.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/16953518777.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_off0000e34b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE34B 5172 bytes
SHA-256: 667b4decbc6b3d1ffdaedfef1a7e9c1819a4605670b0b9626b99a74aa6a4938d
font_01_sfnt_off0000f4ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CA 11076 bytes
SHA-256: 7be33e78653e23f6947e8fe321962f1e8d882ebafb3609074913b0797a5d95d5