Malicious PDF — malware analysis report

Static analysis result for SHA-256 f753ce10699cdfd0…

MALICIOUS

PDF

86.8 KB Created: 2021-03-02 11:09:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 14f9cc827cdf716dbc09743d085c6c78 SHA-1: 64cd1df6fce7a820aa33f3dfe8df4934936bafad SHA-256: f753ce10699cdfd037e614a3b59bde2530565c22aa4cc5695fff143da6be387d
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains embedded URLs, one of which is a primary indicator of compromise. The document body, though heavily obfuscated, suggests a lure related to downloading design assets, which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/strik?utm_term=corporate+identity+mockup+psd+free+download PDF link annotation
    • https://cdn.sqhk.co/lanuniwa/hdxjiZn/redfin_rentals_phoenix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461229/normal_60167effec530.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413456/normal_6013aa9818168.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372983/normal_601d80550f245.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409801/normal_5fd27f49aec20.pdfIn PDF document text
    • https://cdn.sqhk.co/japexexuko/jg5jhgh/tinutezatavaduwuzamav.pdfIn PDF document text
    • http://desokore.medianewsonline.com/pathfinder_2nd_edition_advanced_players_guide_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417669/normal_5fc7f1d451196.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387430/normal_5ff09c56797f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410194/normal_5fe798a6d2f45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425759/normal_5fdb839ac7f34.pdfIn PDF document text
    • https://cdn.sqhk.co/zowesifona/ijidQzG/jufakajirekisilumigarow.pdfIn PDF document text
    • http://jivavesomuviz.getenjoyment.net/55627132797.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457881/normal_5fe74e6e71ca5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375351/normal_60300097b9ab1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nukivamo.myartsonline.com/36589678196.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_off00011770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11770 5464 bytes
SHA-256: 75532075ce5d7655803ac40b80dbc5f1a2297f0c48cba4c9104d1fde88492831
font_01_sfnt_off00012a0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A0B 10388 bytes
SHA-256: 3ca12c6abdcf61401cbf165f09cf99f2262f4ee175e4ba459e1fc58394a818ad

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