Malicious PDF — malware analysis report

Static analysis result for SHA-256 11634f5d0046862d…

MALICIOUS

PDF

90.3 KB Created: 2021-04-09 02:29:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fdb8d6c7ee6dc8aa91d1777fd342925 SHA-1: 527e285d96914784c403c3b9b932af3a3dcbb168 SHA-256: 11634f5d0046862d24914f47543e1837e562737e1d427837cc112ff9ff6f2a18
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, 'ponafet.ru', which is likely used to host a phishing page or a second-stage payload. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of the malicious URL strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/strik?utm_term=central+and+peripheral+route+processing
    • https://cdn-cms.f-static.net/uploads/4421224/normal_6067dbe394b7a.pdf
    • https://cdn-cms.f-static.net/uploads/4378425/normal_60148bb34a378.pdf
    • http://pajebunekelisom.22web.org/dovezukikimexita.pdf
    • http://tofoxewesaxizuz.mywebcommunity.org/gajuxefoxiverix.pdf
    • https://static.s123-cdn-static.com/uploads/4446491/normal_5fcee8cb74ab8.pdf
    • https://cdn-cms.f-static.net/uploads/4384819/normal_6055477664556.pdf
    • https://cdn-cms.f-static.net/uploads/4365649/normal_601cba5929c68.pdf
    • https://static.s123-cdn-static.com/uploads/4445726/normal_5ffe0be58cc95.pdf
    • http://jijoxep.getenjoyment.net/esl_appearance_worksheet.pdf
    • https://static.s123-cdn-static.com/uploads/4475379/normal_5ff19d25d5d1b.pdf
    • http://bamirajewenexo.medianewsonline.com/3d_in_powerpoint.pdf
    • https://cdn-cms.f-static.net/uploads/4486521/normal_603d3f5f8838a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/minegikukovel/d_d_5e_character_sheet_fillable_printable.pdf
    • https://121f8fc1-d270-4171-a721-8ccd656fc20f.filesusr.com/ugd/2ca22b_d1233e8652b04062962ab32fc7ec2527.pdf?index=true
    • https://ad9e3d1f-bb22-46ca-892e-b6aa3325a756.filesusr.com/ugd/837d34_08086f03ea214174918571eea6d9ac60.pdf?index=true
    • https://748f1d53-d141-46c1-926a-d14fc69713a3.filesusr.com/ugd/e3ed1f_68d8762d239b4f278ed31554bcc7e0eb.pdf?index=true
    • http://kazuzaj.epizy.com/62172628516.pdf
    • https://s3.amazonaws.com/jufowokedunod/zivineritawebonijaxu.pdf
    • https://s3.amazonaws.com/divexikav/tibuzaxisusanu.pdf
    • https://s3.amazonaws.com/xilasisefi/original_dd_races.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011142.bin
023486dbd5a153f87cd4743e81127fe84cda50b9e4e2e80ff52ac0f5fa220294		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11142 5240 bytes
font_01_sfnt_off00012309.bin
7a6872e821e0faa8819be02cee3741922fe5a0133cd6a78a02bd6daba781652f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12309 10544 bytes
font_02_sfnt_off00014728.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14728 16204 bytes

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