Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e24b405ea0419cd…

MALICIOUS

PDF

103.8 KB Created: 2021-03-20 12:07:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1b6d92ac55ff3ff8173166d8627c1bf SHA-1: 9cf80430ae3de7c34e9fba5bcd25938de35b8302 SHA-256: 2e24b405ea0419cd50fa5b57d0909933750314fd99b4a79c13fce82e881c389f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1190 Exploit Public-Facing Application

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing or trojan. The heuristics indicate it uses urgency and MFA lures to trick the user, consistent with credential harvesting. The embedded URL `https://resalured.ru/wix?keyword=sellaite+sms+receiver` is likely part of the phishing infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • 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://resalured.ru/wix?keyword=sellaite+sms+receiver
    • http://mantenancie.com/55591596902lwdnu.pdf
    • http://kino-vezde.ru/free_download_3d_max_2009_software_full_version_with_crackrdrx3.pdf
    • http://tarizuxewibob.22web.org/edmodo_for_windows_8.pdf
    • http://kimokabif.medianewsonline.com/70745145432.pdf
    • http://lomuwugevona.getenjoyment.net/puzevewafavasumal.pdf
    • http://disconto50.info/how_to_lubricate_acorn_stairliftvguey.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/be8ad578-39af-4576-b34a-5e2a6865c2de/dadura.pdf
    • http://sopexas.epizy.com/towelazulizevifojekusuk.pdf
    • http://zirutabu.myartsonline.com/instant_pot_duo_7-in-1_electric_pressure_cooker_instructions.pdf
    • https://uploads.strikinglycdn.com/files/1edcc7cc-78e5-4bd7-963d-597550ac7130/traxxas_stampede_2wd_mods.pdf
    • http://vuzuwukef.atwebpages.com/final_fantasy_7_original_ps4.pdf
    • https://s3.amazonaws.com/pusolefosex/gasepojajowelox.pdf
    • https://s3.amazonaws.com/bededuxotulapil/9636708054.pdf
    • https://s3.amazonaws.com/vefagotoje/laxazipinu.pdf
    • https://s3.amazonaws.com/samopakamefap/adverbs_worksheets_grade_6.pdf
    • http://budezeja.rf.gd/56950954713.pdf
    • https://uploads.strikinglycdn.com/files/c70d9496-c3cf-45e3-8716-f878dad9b073/how_to_install_hp_officejet_4500_wireless_printer_without_cd.pdf
    • https://s3.amazonaws.com/jujadodedaruxix/attendance_performance_appraisal.pdf
    • https://uploads.strikinglycdn.com/files/b8e0fc8d-5e45-4286-b0e6-2e172b1c1e08/39013996588.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f081.bin
d32497fc838baa0b795994c566bb8b34755bf05244aea7ff4532415041872da0
pdf-font-stream PDF embedded font (sfnt) at offset 0xF081 22176 bytes
font_01_sfnt_off0001366d.bin
019fb198035057e8f22b2702fa2469b54a6aa77971d276249a436591008f91fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x1366D 5108 bytes
font_02_sfnt_off000147b4.bin
08ef579cd68c36bbe1bdc7f3d365c097a513c08d9b10df38108f8a1f9dcd6814
pdf-font-stream PDF embedded font (sfnt) at offset 0x147B4 16288 bytes
font_03_sfnt_off000178cf.bin
e76da04727a81a53e48db5aab4bb221a3f05e6b9446a95b06123c5d0524f80ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x178CF 17028 bytes