Malicious PDF — malware analysis report

Static analysis result for SHA-256 e09ad85cad7830fb…

MALICIOUS

PDF

74.4 KB Created: 2021-02-18 20:40:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf25e3ce00a7dc3a2473ae3eec410fee SHA-1: e7333731d92c0b8bad0768385013e7db2dabf852 SHA-256: e09ad85cad7830fb502236e9ab0702fafed47fadff9f69e585e98d0c57904c28
116 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for a phishing trojan and an ML classifier indicating a high probability of maliciousness. The 'SE_CALLBACK_LURE' heuristic specifically points to a callback phishing or tech-support scam pattern, where the document likely prompts the user to call a phone number. While no executable scripts were extracted, the presence of embedded URLs, such as 'https://leonvi.ru/wix?keyword=katydid+candy+manufacturer', suggests an attempt to redirect the user to malicious content or gather information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=katydid+candy+manufacturer
    • https://static.s123-cdn-static.com/uploads/4368969/normal_5ff15b71e7a59.pdf
    • https://cdn.sqhk.co/xelalizogim/eaqibLZ/hot_videos_of_klaus_mikaelson.pdf
    • https://static.s123-cdn-static.com/uploads/4376359/normal_5fc9af498fdcd.pdf
    • https://cdn.sqhk.co/dakuwuwuzije/ghvuUpd/19411224808.pdf
    • http://onlinekartiadesi.com/lenovo_g575_wifi_drivers_for_windows_7pu0oo.pdf
    • https://static.s123-cdn-static.com/uploads/4410432/normal_5fc6c4c334745.pdf
    • https://cdn.sqhk.co/tokarikadez/cCutpge/music_video_maker_app_download_for_android.pdf
    • https://static.s123-cdn-static.com/uploads/4487658/normal_60055a606cb55.pdf
    • http://urro-hu.com/desebufi4rem.pdf
    • https://static.s123-cdn-static.com/uploads/4371791/normal_6009871679ebe.pdf
    • https://cdn-cms.f-static.net/uploads/4446494/normal_6029df858a36a.pdf
    • https://cdn-cms.f-static.net/uploads/4373520/normal_6016e83f5b0e1.pdf
    • https://cdn.sqhk.co/surikuzezun/jfhhjft/femamapuwo.pdf
    • https://static.s123-cdn-static.com/uploads/4410199/normal_5ff1357d5ba29.pdf
    • http://trickyturkey.com/crossfit_gymnastic_training_guide1atav.pdf
    • https://cdn.sqhk.co/jigugabopu/bie7rhf/football_champions_league_2019_live.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dowesitobuga/ak_logo_png.pdf
    • https://s3.amazonaws.com/juzewojavomofew/bowipinoxarawu.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_off0000e4b8.bin
567ee32b937404c7d9644e0c4bc8054595b25571b5798b7e146848195a169507		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B8 5028 bytes
font_01_sfnt_off0000f5d0.bin
d183e4d30032322fc53bd78faad98154630b0d4bb34627ed341b4279fcd685cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D0 11484 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.