Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b5b262bde511706…

MALICIOUS

PDF

77.3 KB Created: 2021-03-12 07:34:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a8103298d459e9186b8197c1c823d58 SHA-1: ba78814c1e9fa0feb88e23955eb03461a33c0f46 SHA-256: 7b5b262bde51170603154c98707a5d9ffd330db8231a63131b1161098e32413f
116 Risk Score

Malware Insights

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

The file was detected as malicious by a ML classifier and ClamAV, specifically flagged as Pdf.Phishing.Trojan. Heuristics indicate it's a callback phishing lure, prompting users to call a phone number. The embedded URL https://botokaw.ru/123?utm_term=cheap+egyptian+cotton+bed+sheets is likely part of this phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://botokaw.ru/123?utm_term=cheap+egyptian+cotton+bed+sheets
    • https://cdn.sqhk.co/rujamuzizogo/bbjidDP/4549496193.pdf
    • http://podarokinsta.site/kulelizibiwezobimupuvij1o80.pdf
    • http://magic-world.site/6652130998oan10.pdf
    • https://cdn.sqhk.co/posiraki/jcheENx/fish_cube_apk_mod.pdf
    • http://bostpolamos.site/stanley_sliding_door_hardware_instructions86g8z.pdf
    • https://cdn.sqhk.co/kenipafitu/haU54Ao/action_ivry-_sur-_seine_france.pdf
    • https://cdn.sqhk.co/dekawako/hi3jfGn/pad_footing_design_spreadsheet_bs_8110.pdf
    • https://cdn.sqhk.co/medujebukoma/hhg5hdg/tomapanetegitimo.pdf
    • http://zdsshop.top/tratado_de_historia_de_las_religiones_2ynpc5.pdf
    • https://cdn.sqhk.co/xuwadezab/dijjfjb/financial_times_subscription_contact.pdf
    • https://cdn.sqhk.co/gepabafi/jiIhhfK/29240759142.pdf
    • https://cdn.sqhk.co/juduxijumijo/dgjhjnL/51643098761.pdf
    • https://cdn.sqhk.co/kaxonavi/fidhhTw/38150899289.pdf
    • https://cdn.sqhk.co/vuramufef/YwctQ2V/suzuvovunuzozo.pdf
    • https://cdn.sqhk.co/vagofedewat/DgixGji/vested_simple_reversionary_bonus_meaning.pdf
    • http://petrol-v-pol-price.site/multiple_regression_analysis_spss_data_setlgjpq.pdf
    • https://cdn.sqhk.co/taruvufufezu/X59fEgf/bicycle_games_for_free.pdf
    • https://cdn.sqhk.co/bebomopakax/i1jbJha/46262969341.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/ditiruz/butugapizaduzofidefosupeb.pdf
    • https://s3.amazonaws.com/jipowumat/bruce_lee_net_worth_forbes.pdf
    • https://s3.amazonaws.com/dakebesuvum/the_penelopiad_chapter_24_summary.pdf
    • https://s3.amazonaws.com/muvojugejoxip/how_do_you_start_ivy_cuttings.pdf
    • https://s3.amazonaws.com/setaxilitozuko/fagupipimaxujijuxejo.pdf
    • https://s3.amazonaws.com/luworizesupox/45864443359.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef79.bin
7741d7fa823626f56db161ef3608c0cd250831f62a9b2b404404d79e7da41b4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF79 5356 bytes
font_01_sfnt_off000101aa.bin
13f5845ff1cd6f79f97cf4931884685a58c2a63d2be7878235160f0db6806c37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101AA 11128 bytes

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