Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc068d5e14d38bfa…

MALICIOUS

PDF

84.3 KB Created: 2021-03-24 21:35:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dba7cd0be2af974e871db97ab5099360 SHA-1: 776d18f92e68fc6de7b7565d5a07e1a3081aa901 SHA-256: fc068d5e14d38bfa61ddae4cb0d06e419b8dd226a36a08d681de08d5e6db09d1
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, suggests a lure related to 'screw head types chart pdf'. The presence of external URIs and the ML classifier's high confidence indicate a phishing attempt designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/award?keyword=screw+head+types+chart+pdf
    • https://cdn-cms.f-static.net/uploads/4366668/normal_6021d2f3b8bd2.pdf
    • https://cdn.sqhk.co/sutazojawote/fyighbc/hill_climb_racing_fire_truck_highway.pdf
    • https://cdn.sqhk.co/kukisigafumi/43ifjhi/21240220438.pdf
    • http://shoop-fm.ru/adrenalin_lpband_manual1c0x0.pdf
    • http://hookup666.site/80700529838ufpvm.pdf
    • https://cdn-cms.f-static.net/uploads/4499656/normal_5fd960d2ec6f2.pdf
    • http://dfds.in/vixijibogaziy60u.pdf
    • https://cdn.sqhk.co/lorotukogof/egmuriZ/classic_bubble_bobble_nintendo_game_boy_color_rom.pdf
    • https://static.s123-cdn-static.com/uploads/4386848/normal_5fd039ea9ed9a.pdf
    • https://cdn.sqhk.co/purilusevike/ujggjhh/xumiroxexopofu.pdf
    • http://p-kavkaza.ru/tebovixusax5f6zf.pdf
    • https://cdn.sqhk.co/temetixufuxi/gGlkge9/fogexakiwowidido.pdf
    • https://cdn.sqhk.co/woferomot/iuMZMib/28844950430.pdf
    • https://cdn.sqhk.co/muxaferamet/9ieSKha/morowamaji.pdf
    • https://cdn-cms.f-static.net/uploads/4495269/normal_603bfb161453f.pdf
    • http://securityverifiedservices.com/bolelixigdtqxu.pdf
    • https://static.s123-cdn-static.com/uploads/4446026/normal_5fcd9c032a582.pdf
    • https://static.s123-cdn-static.com/uploads/4476285/normal_5fc9904484ed9.pdf
    • https://cdn-cms.f-static.net/uploads/4450426/normal_602fa0ad51618.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/4ddf8572-26f7-4812-9fd9-c12b35dbe614/what_jobs_use_ict.pdf
    • https://uploads.strikinglycdn.com/files/653179b3-c365-41a1-9448-92e7c277e990/supply_chain_management_internships_houston_tx.pdf
    • https://uploads.strikinglycdn.com/files/6bdf7bb5-2118-4d17-8ae3-cd2eb46a20de/how_to_use_gold_headset_with_psvr.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://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f208.bin
f39b88084a6a692868195f39dd2d5c788655281ec7c0f8f1219019340c3b5e98		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF208 3724 bytes
font_01_sfnt_off0000ff49.bin
1bc98299faf6ac7633766454869513a087c75e1a5d740f3a0005572c0b15bf26		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF49 5032 bytes
font_02_sfnt_off00011080.bin
80983eb0a2f3c1ad81166b744f75674805f1923f8dea7064ec4f3a6b8de8d72d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11080 10860 bytes
font_03_sfnt_off0001356f.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1356F 4324 bytes

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