Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce47b0008c74642…

MALICIOUS

PDF

73.4 KB Created: 2021-02-21 03:02:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: caeed7ae2bdf042031fe983ba9b290d6 SHA-1: 8b2d686ea847c698fdac4bb85619a7cfe5f76f64 SHA-256: 2ce47b0008c7464231edd10cbb3acc6cc4f95053fdd3258e61afc2b4d3835043
194 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 alert for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The presence of embedded URLs and the mention of 'powershellt02gw.pdf' in the document text suggest an attempt to download and execute a secondary payload, likely using JavaScript embedded within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://yafferge.ru/strik?utm_term=the+maze+runner+3+finale In PDF document text
    • http://lovemecompletely.com/office_365_proplus_activation_report_powershellt02gw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479222/normal_5fd9fc26290c3.pdfIn PDF document text
    • https://cdn.sqhk.co/woxekivepi/ehdghgh/41693946426.pdfIn macro / runtime command snippet
    • https://cdn-cms.f-static.net/uploads/4471969/normal_602f0a09687d2.pdfIn macro / runtime command snippet
    • https://cdn-cms.f-static.net/uploads/4423148/normal_6018ccf7b2e45.pdfIn PDF document text
    • https://cdn.sqhk.co/gusiloxi/iF6N3uB/jinosozuzukemu.pdfIn PDF document text
    • https://cdn.sqhk.co/jorisuzil/DPpjhjc/super_sonic_the_hedgehog_pictures.pdfIn PDF document text
    • https://cdn.sqhk.co/lelabepena/icghLDe/31411975380.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405642/normal_5fce91d8be817.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/MGMiaia/56101912714.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/gdhbjdJ/koalas_to_the_max_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/woxiwovar/hangdFw/50626643718.pdfIn PDF document text
    • https://cdn.sqhk.co/dadirowuj/JZh0Rgd/oppa_doll_premium_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/447In macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sozanizitug.epizy.com/37818926970.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/33620617423.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_off0000e28f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE28F 4992 bytes
SHA-256: a47720b7c15be53cc5959801e10f22e245d9dbef78ea1fc9a996f0a55a9bc1dd
font_01_sfnt_off0000f368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF368 10896 bytes
SHA-256: 5502229f7dcd85388f30a5aafbd2a10542b40d45b9c6f4049c09a1c9190bc59e

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