Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1f8104ceb47d392…

MALICIOUS

PDF

68.6 KB Created: 2021-02-18 08:01:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4d5ab43dc44103ed412cab95e54f6a82 SHA-1: f33af47ab63969685d2a22ce744673cd41ae98b5 SHA-256: e1f8104ceb47d392f8e22076a953bd36fa89efb3ebe9c99185c775e72f64fb5d
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The SE_CALLBACK_LURE heuristic indicates the document may prompt users to call a number, a common tactic in tech support scams or phishing. 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 6

  • 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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://bologen.ru/wb?keyword=capital%20grille%20king%20of%20prussia%20reviews PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451941/normal_6025655b0d345.pdfIn PDF document text
    • https://mewupevubuk.weebly.com/uploads/1/3/5/3/135387541/gizekebijis-nofuraniner.pdfIn PDF document text
    • https://cdn.sqhk.co/xonivozew/jcMsDig/95087793593.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454575/normal_5fe08a4dbf0ef.pdfIn PDF document text
    • http://vodabezoli.iblogger.org/27626642917.pdfIn PDF document text
    • https://rexakutomas.weebly.com/uploads/1/3/0/7/130739652/844391.pdfIn PDF document text
    • http://dexowowijovovu.iblogger.org/xijazokowugate.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421934/normal_5fdf2bcecbef2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470226/normal_602d519a00ccc.pdfIn PDF document text
    • https://jozurukezareta.weebly.com/uploads/1/3/4/7/134741488/1479898.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tugumeb/mudufadonotedixagigip.pdfIn PDF document text
    • http://zagopemolal.rf.gd/learn_korean_grammar.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/football_freestyle_hd_videos.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/59015755321.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/63160350890.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/property_management_report_sample.pdfIn PDF document text
    • http://limepupotof.epizy.com/linedance_stepsheet_day_of_the_dead.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC152 5188 bytes
SHA-256: 448658bf7e98876bef5029eedd32cee4541e2d85c43bdd2ab9c0d2259095214f
font_01_sfnt_off0000d32a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD32A 10520 bytes
SHA-256: 2d1c00af6eac2cf681dd77c622951c2937f9bf57f29c36f89b6cd513686e2b9c
font_02_sfnt_off0000f6f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F2 4324 bytes
SHA-256: 781b9fae2fb9201b4a05d2041fea553bb2973f1d011ab9c51e3326c72e342c60

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