Malicious PDF — malware analysis report

Static analysis result for SHA-256 7597e5fe3e72f3dd…

MALICIOUS

PDF

79.0 KB Created: 2021-01-28 11:27:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 3a0e95df17cf76b0b0c7410551879588 SHA-1: de4530daab93b1460263c6551af59d6a42ad06bb SHA-256: 7597e5fe3e72f3dda0f660484387752e831ab7da33d23719d79c382e173d1855
112 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains heuristics indicating urgency lures and visual download buttons, suggesting a social engineering attempt to trick the user. The embedded URL `https://maypoin.ru/aws?utm_term=avast+secureline+vpn+apk` likely serves as a download link for a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/aws?utm_term=avast+secureline+vpn+apk PDF link annotation
    • https://xugowapowafav.weebly.com/uploads/1/3/0/7/130775127/jitobenemar.pdfIn PDF document text
    • http://mbfsopg.com/jewel_match_blast_classic_puzzle_games_free1ggv4.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/S5ZheSa/angry_birds_2_soundtrack_list.pdfIn PDF document text
    • http://1xbets-regs.site/descargar_kof_2020_para_android_apk74eua.pdfIn PDF document text
    • http://megantv.site/fubuwunen4tdrk.pdfIn PDF document text
    • https://cdn.sqhk.co/remowiwa/Mjb0hed/100_in_1_games_free_download_for_pc.pdfIn PDF document text
    • https://silavetej.weebly.com/uploads/1/3/5/3/135314504/paxolupamixo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456379/normal_5ffff61e99a70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453342/normal_5fef81b970c69.pdfIn PDF document text
    • https://kadogejajufa.weebly.com/uploads/1/3/4/7/134717900/vamuvilisakig-gifurasu-sudezaroreliwut-sidebekapuza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460476/normal_5ff3f11615717.pdfIn PDF document text
    • http://insta-sale.site/86948603031wjyar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427538/normal_6008856daac80.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/dorobukasawituw/zokasesepew.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/call_recording_app_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/xabigo.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/property_inspection_report_template_nz.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0DF 5040 bytes
SHA-256: 088a7f86f22979a5e9f84707987f367765774a7b6775e5d6814ef68c2cdf1a81
font_01_sfnt_off0000f21c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21C 12392 bytes
SHA-256: adada443a99b24dcedca4563eff453ea67364dd6936b3e65054b2ae01542ea43
font_02_sfnt_off00011957.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11957 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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