Malicious PDF — malware analysis report

Static analysis result for SHA-256 60660c44f58c3543…

MALICIOUS

PDF

103.9 KB Created: 2021-02-15 06:32:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 8af8751e815cbadd92abfde50423e2ce SHA-1: 38d2f60f1cf9f53fb7d6f9c5757ad782b1235ee5 SHA-256: 60660c44f58c3543d5431768f032c4b6416735ad2e23cc57862ea7415f27a371
226 Risk Score

Malware Insights

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

This PDF document contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic indicates the document instructs users to copy/paste commands into a shell, a common technique for downloading and executing further malicious content. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://jacksth.ru/aws?utm_term=android+adb+run+emulator PDF link annotation
    • http://reduslimitaly.website/mario_kart_mobile_challenge_guideuwpdn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454161/normal_600df9e17ace5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411700/normal_6024468acaa51.pdfIn PDF document text
    • http://piredvizhnik.com/juzuwe7gurn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376379/normal_5ff511580543e.pdfIn PDF document text
    • https://jiresuzava.weebly.com/uploads/1/3/4/7/134706808/1241555.pdfIn PDF document text
    • http://stebsmeh.space/vip_211k_receiverp0lmq.pdfIn PDF document text
    • http://ighelpcenter.xyz/sunozupaziwivnruin.pdfIn PDF document text
    • https://vipapixamez.weebly.com/uploads/1/3/0/8/130814430/9610ecd.pdfIn PDF document text
    • https://jotovaxawunujej.weebly.com/uploads/1/3/1/8/131856347/1490987.pdfIn PDF document text
    • http://littlenat.space/skystream_android_tv_box_uk0o2fp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420775/normal_5fd2e0ef39991.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379240/normal_5fd62c074f27b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000158ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158EE 4924 bytes
SHA-256: fe4a067df5903b31c66d428a944650afe3cfe0bb901738074ec737aec4478543
font_01_sfnt_off00016991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16991 12216 bytes
SHA-256: 14651320e0c549d1b854eec5df8ca5c8582f9fe91a2add15e7ae92709fc252a7

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