Malicious PDF — malware analysis report

Static analysis result for SHA-256 95ac582197d6482e…

MALICIOUS

PDF

76.1 KB Created: 2021-07-14 02:36:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 372d033480575afdb98e8c8603757814 SHA-1: 8f321c55be58e00a7d686469953b82d5ea53fb6a SHA-256: 95ac582197d6482e0327e1a101b9ba11b3154d7f42f0193106a23f628f846bbf
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains an embedded URL pointing to a resource that is likely intended to trick the user into downloading malicious software. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The embedded URL, while marked as benign in this context, is part of the lure. No scripts were extracted, but the PDF structure and heuristics suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9163

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://feedproxy.google.com/~r/sq/ugae/~3/gOBB6uaVNRA/square?utm_term=pdf+reader+free+download+for+windows+7+32+bit+filehippo
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e895d191a9976fca49a23f/1625855441735/lopuvovimawo.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ed757dfb5306426ecf3f6b/1626174845651/vaboxel.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e95bf883ae0c49023acb0a/1625906168430/diamond_fork_fifth_water_hot_springs.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edeecaba7c7f743c1ef245/1626205899133/cure_moderate_wounds_3.5.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee0bf33753dc428c8494ce/1626213363769/fumuzipofezobuwinaj.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec93837dc7460dd09c1ccc/1626116995722/negexuwevi.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e81c1f1d61f435cefa7f40/1625824287140/wikirejuwuvufiranawuxeg.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5f2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5F2 16792 bytes
font_01_sfnt_off0000de09.bin
688dffcd942b463799b0187eef84014ab381af39cca10aa44cd409778640324b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE09 11164 bytes
font_02_sfnt_off0000f800.bin
21009e326c77ad186e499372cb3acbbaf39762b6d15f479b551c9b3caaaa30a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF800 16236 bytes

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