Malicious PDF — malware analysis report

Static analysis result for SHA-256 b413faeec102cf20…

MALICIOUS

PDF

69.3 KB Created: 2021-02-14 21:39:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 6b66f36f557d8c82822def1b214c3704 SHA-1: b9daecb29ebfcc7e1b3d1b3b7e440f67f9295fa8 SHA-256: b413faeec102cf2056414f0315a07877aafb2b54c2a2079780b7b866f630ebe5
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate maliciousness, likely a phishing attempt or a lure to a malicious site. No scripts were extracted, but the presence of an external URI suggests an attempt to redirect the user to a potentially harmful resource.

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/123?utm_term=drawn+to+life+volume+1+pdf PDF link annotation
    • https://cdn.sqhk.co/bivuwusim/hKO9xKw/oscar_senior_app_review.pdfIn PDF document text
    • https://cdn.sqhk.co/gasukatebu/ib3Nngc/hexa_jigsaw_puzzle_app.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487381/normal_5fde57ecb6d11.pdfIn PDF document text
    • https://cdn.sqhk.co/gudijupimeb/ephaohi/masagofinanolokinosazoxew.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407729/normal_5fe5f1c58d849.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fodose/mac_app_store_waiting.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/adobe_baskerville_font.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/62812425157.pdfIn PDF document text
    • https://s3.amazonaws.com/vefagotoje/patixonagadinixokur.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/51635745790.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/bimibivogubos.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/litazifufadimo.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/59780530521.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/aegisub_karaoke_effect.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/iogp_report_459_life-_saving_rules.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_off0000d4e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E9 5212 bytes
SHA-256: aad76d514d59c6de441a842b78be84a56c82f1eed8345da7b42471e8e8d7420a
font_01_sfnt_off0000e6b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B0 9976 bytes
SHA-256: b910c547c59129770e55d6c49c7d7c3b279856ceef1b325f29873e6169dcf191

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