Malicious PDF — malware analysis report

Static analysis result for SHA-256 a39a5cc2b3a00cd7…

MALICIOUS

PDF

81.9 KB Created: 2021-06-13 22:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2bad8b9102b0e578e39b99c139631b68 SHA-1: d25177952df46fd16e70ca22bd1fa489c5614794 SHA-256: a39a5cc2b3a00cd707d5e182fb3e97b071cbf8d2dd01f6c55698c19826b13a88
104 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host or deliver a secondary payload. The presence of a visual download button further supports a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://laborke.ru/pbw?utm_term=ppt+template+ai
    • https://cdn-cms.f-static.net/uploads/4447647/normal_6060ff5cb9b87.pdf
    • https://cdn-cms.f-static.net/uploads/4367632/normal_60178fcf82b5c.pdf
    • https://static.s123-cdn-static.com/uploads/4478414/normal_5fce45f757917.pdf
    • https://static.s123-cdn-static.com/uploads/4496605/normal_5ff7c4e732ec7.pdf
    • https://cdn-cms.f-static.net/uploads/4472182/normal_5fd1783643405.pdf
    • https://cdn-cms.f-static.net/uploads/4365560/normal_6041122f7610e.pdf
    • https://cdn-cms.f-static.net/uploads/4460946/normal_60bd8aa659e92.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vananizi.pbworks.com/w/file/fetch/144630618/google_play_store_app_game_download.pdf
    • http://kedajawi.pbworks.com/w/file/fetch/144824409/xofojug.pdf
    • http://tagiruxot.pbworks.com/w/file/fetch/144916785/21733456278.pdf
    • http://sodopateduke.pbworks.com/f/29591596713.pdf
    • http://lifelekufa.pbworks.com/w/file/fetch/144913008/21226551079.pdf
    • http://gegoxelaw.pbworks.com/f/bostitch_sb-1850bn_review.pdf
    • http://voluluzij.pbworks.com/w/file/fetch/144936573/71352743436.pdf
    • http://namimutigete.pbworks.com/f/pefozovokejuvawapemugafu.pdf
    • http://jolowajuwijo.pbworks.com/f/bin_mangi_dua_full_novel_download.pdf
    • https://uploads.strikinglycdn.com/files/76161060-03db-4f77-80dc-77a369db3d1b/ancient_egypt_the_light_of_the_world_vol._1_and_2.pdf
    • https://uploads.strikinglycdn.com/files/2131d64c-5d1f-428f-9e91-ba4696fb39e9/notawovetu.pdf
    • http://xujefix.pbworks.com/f/wadabokakogutibikufudox.pdf
    • http://visetululiv.pbworks.com/w/file/fetch/144423291/kesonivolefameneti.pdf
    • http://negaboxa.pbworks.com/f/how_to_change_dymo_label_size_mac.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_off00010657.bin
83b4258c50552deb5e49d9cf5e2040def16aa6487d2476c702d2b5d41d790cb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10657 4692 bytes
font_01_sfnt_off0001163a.bin
8899c2c4fd8da0f36e189e2f7567b07c52da9cb0d87dc00a174a496591e92797		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1163A 10776 bytes

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