Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc21e213deb05641…

MALICIOUS

PDF

69.6 KB Created: 2021-02-03 13:04:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: bd4e3244e0402160c6bf4179d6958799 SHA-1: f56c2b5cd076873107c8d1cd9753450028eb8753 SHA-256: bc21e213deb05641516bc429ee9aa1644541d8e2b904fff00a07cbaedaaed681
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for 'apk cheat engine android no root', likely intended to trick users into downloading malicious software. ClamAV and ML classifiers strongly indicate this PDF is malicious, specifically flagged as a phishing trojan. The presence of an external URI points to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/wb?keyword=apk%20cheat%20engine%20android%20no%20root PDF link annotation
    • http://mokexuvukidifek.iblogger.org/gmail_for_pc_windows.pdfIn PDF document text
    • http://trynutra.shop/21563159425jma14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446045/normal_601046604570a.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/xamapebonijos/87229455478.pdfIn PDF document text
    • http://zebinagapovu.epizy.com/aprender_espanhol_sozinho.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/11019347160.pdfIn PDF document text
    • http://fevepapowiwed.epizy.com/malayala_manorama_calendar_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/nimiwupevebamajawubujaxuk.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/78119206534.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/wasuwabojegamogim.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_off0000d4a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A3 5180 bytes
SHA-256: 653fe9b2030ad013734db2937a27b59b88fe82516efc8ac5ee02ea5685c7f1b2
font_01_sfnt_off0000e63f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE63F 10448 bytes
SHA-256: 1234430130f33f0d54712c1f1b7702e73a473e9422999a6cbf042f53d958fa24

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