Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99db36d5e3e26e4…

MALICIOUS

PDF

77.0 KB Created: 2021-03-01 02:43:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 05dd0688b673316156297bca1862b3ef SHA-1: 52f460e6397186c39270130c7c7670405cfaff2d SHA-256: f99db36d5e3e26e4983469fdf2ff816e4df477f6322ff4d0a404356cd6770696
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though heavily obfuscated, contains keywords related to game cheats, suggesting a lure to external phishing or scam sites. No scripts were extracted, but the presence of external links and the overall heuristic profile strongly indicate a phishing or scam attempt.

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://vilenefex.ru/wix?keyword=walking+dead+our+world+game+cheats PDF link annotation
    • https://cdn.sqhk.co/rolileduvof/dohjD7V/bapozi.pdfIn PDF document text
    • https://revugegan.weebly.com/uploads/1/3/4/6/134682990/7593309.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481820/normal_6032e14fd2643.pdfIn PDF document text
    • https://lobusejorul.weebly.com/uploads/1/3/5/3/135338183/lerewak_sabejerokoxet_puzipadulufilov.pdfIn PDF document text
    • http://vimabanu.sportsontheweb.net/gujol.pdfIn PDF document text
    • http://rovanenafet.getenjoyment.net/requirements_to_get_a_job_at_ross.pdfIn PDF document text
    • https://wegolabama.weebly.com/uploads/1/3/4/5/134511146/rivibaw.pdfIn PDF document text
    • https://gutazalofekeva.weebly.com/uploads/1/3/5/3/135395177/mogumawodutuke.pdfIn PDF document text
    • http://gadetebes.sportsontheweb.net/can_an_unmarked_police_car_give_you_a_ticket.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zogosugo.onlinewebshop.net/27244996174.pdfIn PDF document text
    • http://nununad.myartsonline.com/96195795915.pdfIn PDF document text
    • http://zejusamipokera.myartsonline.com/maze_runner_2.pdfIn PDF document text
    • http://vujuvisesakok.myartsonline.com/how_much_is_a_lash_extension_course.pdfIn PDF document text
    • http://wuragumok.atwebpages.com/74907926460.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_off0000efcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCB 5520 bytes
SHA-256: bb3a50f2a235319502de2af68394ca1f3bedf401f7303162612f025629e01847
font_01_sfnt_off00010282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10282 10568 bytes
SHA-256: 1302302064985defafa467a27b56d6362e18432f1e910b29d3bac0b6c3bff4f8

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