Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec0255c585c7930c…

MALICIOUS

PDF

75.8 KB Created: 2021-06-06 06:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67d1b9c916e7d17f5b9a555479819a90 SHA-1: 0a50d2e2e271f601866974cc4a8c90cb67563762 SHA-256: ec0255c585c7930c1274c07a1cd96ea0c8a356abf2949c891615e9bf42ea59ab
156 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a phishing or malware distribution lure, indicated by the 'PDF_SEO_LINK_FARM' heuristic which identified a large number of external links. The primary URL, 'https://allytemp.ru/pbw?utm_term=tv+cast+brasil+pro+apk+mod', suggests a lure for potentially unwanted or malicious software. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0', further supporting its malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://allytemp.ru/pbw?utm_term=tv+cast+brasil+pro+apk+mod
    • https://jevavuxenexek.weebly.com/uploads/1/3/5/3/135351486/tesugopit.pdf
    • https://tomutoremaduv.weebly.com/uploads/1/3/1/3/131398477/xasuforofi.pdf
    • https://bexoligimes.weebly.com/uploads/1/3/4/3/134314561/xurofukuzevujan.pdf
    • https://nozonefabizeg.weebly.com/uploads/1/3/0/9/130969368/9021862.pdf
    • https://zumegopepotiko.weebly.com/uploads/1/3/1/3/131398003/67e6afe7.pdf
    • https://xoxomedeze.weebly.com/uploads/1/3/5/3/135308121/4910084.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://betosaxugawi.pbworks.com/f/85583377479.pdf
    • https://uploads.strikinglycdn.com/files/a964c31f-439c-4083-9ea0-f15d00fe19e7/vebaxawolo.pdf
    • http://kokoxudalux.pbworks.com/f/descargar_winrar_para_windows_7_32_bits_gratis_espaol.pdf
    • https://uploads.strikinglycdn.com/files/89779ad3-e55a-4722-8e4c-024c22666b2b/xonemosil.pdf
    • https://uploads.strikinglycdn.com/files/5b4ccf52-7b6c-4dc8-b850-017a58c00aef/zimadomuninaf.pdf
    • http://duziruromeja.pbworks.com/w/file/fetch/144499542/61446818522.pdf
    • http://jesababa.pbworks.com/f/57051225860.pdf
    • http://famukaser.pbworks.com/w/file/fetch/144676545/vodifedi.pdf
    • http://sozevupegufi.pbworks.com/f/site_visit_report_template.pdf
    • https://uploads.strikinglycdn.com/files/de8d3aca-cbb6-4993-97e9-e1be89a850c8/38904093749.pdf
    • https://uploads.strikinglycdn.com/files/a532da86-b44b-44bd-96e8-00cf23f40939/plant_city_high_school_soccer_schedule.pdf
    • https://uploads.strikinglycdn.com/files/93417d55-3d9c-4abf-a33c-50430521be99/rolenorekujufoduveg.pdf
    • http://kepojijudiva.pbworks.com/w/file/fetch/144527217/muwuvumobapagesigoruzowaw.pdf
    • http://bidudilobofu.pbworks.com/f/gta_v_apkpure_for_android.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_off0000e6b6.bin
2cf9eef6f94583c483a8482ef9ccdb10ec65184573b0fc191b6559d52d1fee19		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B6 5432 bytes
font_01_sfnt_off0000f917.bin
9643f544fb50fbc3738f247e19de4cea3ee5ec87ef8f46b82c474abc6472ef45		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF917 12620 bytes

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