Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd6a6c634e405cb5…

MALICIOUS

PDF

73.0 KB Created: 2021-01-19 19:45:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 6ede53f4f975291382551b5e4fb6b4f5 SHA-1: 0c532c4b4661b2c453c71a55ca84de2c001d22e8 SHA-256: bd6a6c634e405cb51a287e2e764d493cf07684f9e750fc74bb6823e56411b899
116 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/123?utm_term=learn+to+fly+3+unblocked+hacked PDF link annotation
    • http://vekogevev.22web.org/chugach_powder_guides_hut.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojelawov/triegiC/kovitegotisolurabulozekam.pdfIn PDF document text
    • https://site-1175775.mozfiles.com/files/1175775/tokusawiredagelibuluf.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/jjgcWLv/goal_line_blitz.pdfIn PDF document text
    • https://site-1172874.mozfiles.com/files/1172874/geometry_parkour_apk.pdfIn PDF document text
    • https://site-1178703.mozfiles.com/files/1178703/98377103841.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/ShhjNhi/free_online_slots_machines_games_no_download.pdfIn PDF document text
    • https://site-1241880.mozfiles.com/files/1241880/platform_heels_rose_gold.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/badodemebo/bicuspid_valve_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/kibowimizax.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/manga_anime_netflix_adaptation_template.pdfIn PDF document text
    • http://guxudapese.epizy.com/81675537205.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/47178114237.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/maneburumubivesakovijebaw.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/kexozogizol.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/201627103.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/accounting_basics.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/postage_stamp_template_large.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/g-pen_f610_manual.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFCE 5340 bytes
SHA-256: e7d293eef3b667b12766a5000001260c7d38cf5c981385489a719dc9ae71781c
font_01_sfnt_off0000f204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF204 10788 bytes
SHA-256: af2225ff5c892b57a0db4289542d076ee172fd3149af9f4c0e30b727f9155886

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