Malicious PDF — malware analysis report

Static analysis result for SHA-256 f00e3c53973c1e70…

MALICIOUS

PDF

78.6 KB Created: 2021-01-18 09:36:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 628db432d103cc64748d35d05379a2f1 SHA-1: ef759089efeb172fe7a5e8d240e5ad36bd5fe061 SHA-256: f00e3c53973c1e707a569500a0b02f5b524aa938f5333fccccb0ef24b8a5241a
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document contains numerous embedded URLs, many pointing to disposable hosting, suggesting a phishing or malware distribution scheme. The presence of a URL with a 'utm_term' parameter further supports the idea of a targeted 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://trafffe.ru/123?utm_term=japan+information+for+kids PDF link annotation
    • https://site-1168140.mozfiles.com/files/1168140/jurassic_survival_island_mod_apk_home.pdfIn PDF document text
    • https://cdn.sqhk.co/zovigobut/jabyxKN/11th_street_station_michigan_city.pdfIn PDF document text
    • https://site-1174515.mozfiles.com/files/1174515/11304872692.pdfIn PDF document text
    • https://site-1172732.mozfiles.com/files/1172732/xomofadire.pdfIn PDF document text
    • https://site-1168054.mozfiles.com/files/1168054/contradanza_violin_sheet_music.pdfIn PDF document text
    • https://site-1168088.mozfiles.com/files/1168088/american_racing_pro_series_drag_wheels.pdfIn PDF document text
    • https://site-1236126.mozfiles.com/files/1236126/vidmate_se_video_jio_phone.pdfIn PDF document text
    • https://cdn.sqhk.co/sewujuzanas/bhcunie/uber_hamburgo_mexico_telefono.pdfIn PDF document text
    • https://cdn.sqhk.co/dinokafoxume/idigm9Z/97437052484.pdfIn PDF document text
    • https://site-1176201.mozfiles.com/files/1176201/battle_warship_naval_empire_gift_codes_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/xafemepino/Hgj7ihD/ladagarakiza.pdfIn PDF document text
    • https://site-1173612.mozfiles.com/files/1173612/vidugarexi.pdfIn PDF document text
    • https://site-1177303.mozfiles.com/files/1177303/jotabubaja.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/jetifonewenupa.pdfIn PDF document text
    • http://koxogulu.rf.gd/87411202459.pdfIn PDF document text
    • http://jasigobup.epizy.com/79403555000.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/fundamentals_of_business_process_management_free_download.pdfIn PDF document text
    • http://fazetotunoju.epizy.com/kirijozo.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE278 5416 bytes
SHA-256: ab089c09533142d4e01a55711f6d652ad750c5920eff030dd4c4cd7268e1c34a
font_01_sfnt_off0000f53a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF53A 5208 bytes
SHA-256: f1cb23997a548b961e6bc6e2d2ff794625472ea82c5caa90dc67f344e31f61fe
font_02_sfnt_off000106e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E7 10800 bytes
SHA-256: 428ea84556fc06267874d23a47c100bc1f17f91e2a21b5fc0d8f9fddffd173d7

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