Malicious PDF — malware analysis report

Static analysis result for SHA-256 3da2dad39172363a…

MALICIOUS

PDF

81.3 KB Created: 2021-04-05 23:40:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 09b30f4a4c63858cd5b8075b96919c0d SHA-1: 7de08bfb4234468f6c1404ca37024363f11aa816 SHA-256: 3da2dad39172363ae8f2de502e6664f63439d80b8b1780395c88bc7a833a94d0
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with a primary focus on redirecting users to 'gimoguvi.ru', suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains keywords related to games and applications, likely serving as a lure.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gimoguvi.ru/wix?keyword=oiligarchy+game+mobile PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415950/normal_60316ae6334d7.pdfIn PDF document text
    • https://cdn.sqhk.co/rixutixim/1gdPMhb/14408711621.pdfIn PDF document text
    • http://drnextact.xyz/how_to_use_canon_mp21dx_calculatortttsn.pdfIn PDF document text
    • https://cdn.sqhk.co/keropolor/enZxVi3/jitarujibaw.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojelawov/ahb3Lrm/12416292465.pdfIn PDF document text
    • http://legalvictory.group/bolojunemodugq6kmw.pdfIn PDF document text
    • https://cdn.sqhk.co/nufanusiki/XCQA93u/urban_car_simulator.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495997/normal_5ffec18d8f79c.pdfIn PDF document text
    • http://palaxofivuleduj.medianewsonline.com/jezasutuwolutimaworoji.pdfIn PDF document text
    • https://cdn.sqhk.co/busibelifiv/hhGhF6C/vagenuxovubilutifumagib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480598/normal_603c0f95dc45a.pdfIn PDF document text
    • https://cdn.sqhk.co/lojibuwe/ibygegB/party_city_halloween_costumes_for_tweens.pdfIn PDF document text
    • http://gedatidigog.sportsontheweb.net/act_math_rules.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/e81e7be8-ff46-451d-a223-afb747b8f57d/zefudifibogebup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca90ea9a-f6c5-4cda-b9c8-191bc700b72e/verbal_reasoning_test_11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0a965e5-8b65-46f5-bcb2-3f12b32a1521/financial_algebra_advanced_algebra_with_financial_applications_1st_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cc059b5-ba82-40ef-a5bc-2b14a35ac1e7/wavunalakibediruni.pdfIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/runegakelomoviwib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3aafe0ac-50fd-49a2-adc8-ee253cd8d189/the_battle_of_the_labyrinth_chapter_8_summary.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_off000101ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101FF 5304 bytes
SHA-256: 30caa50ef2425243f556c0e32f4cabf7a339f24b09d5cad5449ab5eb50bb1250
font_01_sfnt_off000113ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113EA 10792 bytes
SHA-256: 623153d8edca76c66ab15752e63fef44a13a846d4060b83a8e29d06674f99a09

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