Malicious PDF — malware analysis report

Static analysis result for SHA-256 88c396cff7e1de23…

MALICIOUS

PDF

113.5 KB Created: 2021-02-25 05:23:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d6ea4ba0e8f04b81c80f16b345236c98 SHA-1: c7ab39c2aad3f0ae66b40dfa7f8a031b9892ce8f SHA-256: 88c396cff7e1de23aa018ce9bbcad7e3e8171cd2a2f958b9872e77a38f4bdec3
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/strik?utm_term=what+is+the+sage+in+tao+te+ching PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4446923/normal_5fcebfbb5523e.pdfIn PDF document text
    • http://rowowevu.mypressonline.com/81137696491.pdfIn PDF document text
    • http://allieshouseofhope.com/tilomuguxozv6if.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487201/normal_60228b75c8ab0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453537/normal_5fede4ea1a353.pdfIn PDF document text
    • http://lixorajepidil.mygamesonline.org/jepipejomu.pdfIn PDF document text
    • http://izzzaaa.space/2000_dodge_caravan_service_repair_workshop_manual_download901xn.pdfIn PDF document text
    • http://resijunul.22web.org/thank_you_greeting_card_template_word.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458623/normal_5ff4eafb2c5f6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rerezedosal.rf.gd/ap_seminar_rubric_2020.pdfIn PDF document text
    • http://geforagegi.atwebpages.com/66151598713.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/fudimixam.pdfIn PDF document text
    • http://gurabagoderes.atwebpages.com/42881741840.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/global_capital_market.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/zopelilipobe.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/ivy_park_shorts_size_guide.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_off00013b7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B7A 15448 bytes
SHA-256: e4560d61d529e8d1e608ba9e4e541de7654482d4b98994aac0c83e84a0e793fc
font_01_sfnt_off00016d12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16D12 4944 bytes
SHA-256: 304e34340089e3c0e887f1613c62bc568f0ceaef3ef600a5b70b64c702358d5b
font_02_sfnt_off00017df9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17DF9 20440 bytes
SHA-256: 049c0084fd732146f77a57b2770e85da5f670f8fbaef6496453fd886c38a3040

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