Malicious PDF — malware analysis report

Static analysis result for SHA-256 adfbc445382bcdc5…

MALICIOUS

PDF

73.4 KB Created: 2021-06-01 02:30:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b43ab6852545cb7205a415c107022804 SHA-1: e35cb16908ddc0be5531a3236168954be7edd47f SHA-256: adfbc445382bcdc5a82f83bad5f5b000297147a392ac7ccd10fdb64d16810abb
156 Risk Score

Malware Insights

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

The PDF contains a lure for 'Full hd bollywood movies 1080p' and embeds numerous external links, identified as a link farm. One of the primary external links points to a URL that appears to be part of a phishing or malicious campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://coretry.ru/pbw?utm_term=full+hd+bollywood+movies+1080p
    • https://rokolumer.weebly.com/uploads/1/3/0/9/130969153/jorosuribamosabizaz.pdf
    • https://cdn-cms.f-static.net/uploads/4468255/normal_604cbabd9b085.pdf
    • https://cdn-cms.f-static.net/uploads/4422876/normal_6043e865cdbbc.pdf
    • https://kimonasisu.weebly.com/uploads/1/3/5/4/135400987/juloze-gikadijilofujo-luzen-balutovilezazib.pdf
    • https://wagelefukat.weebly.com/uploads/1/3/4/2/134265927/8ede41f6.pdf
    • https://duvozeja.weebly.com/uploads/1/3/0/7/130739152/dofaroribi_sejunogisisul.pdf
    • https://vebaduxop.weebly.com/uploads/1/3/5/3/135327545/992325.pdf
    • https://sizegetode.weebly.com/uploads/1/3/4/3/134309939/kuwuzaneligafam_mojovipox_tonorovoji_vudip.pdf
    • https://funovupudejo.weebly.com/uploads/1/3/4/4/134473131/76d6586f0.pdf
    • https://kilokuvawap.weebly.com/uploads/1/3/0/8/130874431/2261b80a219e92.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d068b581-27d4-40a1-af37-5f8233ed51d1/25434417236.pdf
    • http://supatibu.pbworks.com/w/file/fetch/144417108/gym_workout_plan_photos.pdf
    • http://rugewenuzed.pbworks.com/w/file/fetch/144420294/lumedibelazepabap.pdf
    • http://bofamawetodo.pbworks.com/w/file/fetch/144434103/xegedegovax.pdf
    • http://mumubib.pbworks.com/f/51320434886.pdf
    • http://zikasamu.pbworks.com/f/gta_vice_city_cheats_file_download_for_pc.pdf
    • https://uploads.strikinglycdn.com/files/2b19dfe2-33cf-4fb6-97f6-0cfc50a46ea5/strike_force_heroes_unblocked_games_66.pdf
    • http://pezeliv.pbworks.com/f/viveputel.pdf
    • http://mifimoruzuwo.pbworks.com/f/begepojiwiwo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e068.bin
c7f099b781873d203bebe93a1fa679f95649aea3454afa671b499eaa7b7cc48f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE068 5628 bytes
font_01_sfnt_off0000f388.bin
1aa6039b8f8163820fd18b3ab17c7e0aa690cfc40734cc8fff700d0344d02d4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF388 10796 bytes

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