Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ad907d091da3191…

MALICIOUS

PDF

83.9 KB Created: 2021-03-27 15:59:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6eb86d885525e5aaeb27542f748b53ee SHA-1: a0e4a7e3a7b0536874096eb8ed03bc739eae71a2 SHA-256: 3ad907d091da319130622a402308be4096febca948572ad83cd19c592d3534cb
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains a heuristic indicating a security bypass instruction, urging the user to disable antivirus software. Additionally, it features a URL that likely serves as a lure for downloading a malicious payload. ClamAV detection further confirms its malicious nature as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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://ponafet.ru/wix?keyword=cl%25C3%25A9+windows+8.1+professionnel+build+9600
    • http://bnatural.space/lagu_bersyukur_kepada_allaht5dnb.pdf
    • https://cdn-cms.f-static.net/uploads/4422377/normal_60419c93279e5.pdf
    • http://faceskinagainbeauty.xyz/punetikugaxerzidqf.pdf
    • http://basiditdcf.space/defirezagusaninoxiwoziniwf59ii.pdf
    • http://chatik85939775.fun/juxurovofisisesoth9e1e.pdf
    • http://zitupow.medianewsonline.com/ang_dating_biblia_download.pdf
    • http://urologo.store/ap_chemistry_textbook_onlinetyny6.pdf
    • http://jonebukusopovet.mygamesonline.org/neumoconiosis_asbestosis.pdf
    • https://cdn-cms.f-static.net/uploads/4505358/normal_605d0aef4fdf9.pdf
    • http://blacktea.space/gartner_magic_quadrant_siemjdqx7.pdf
    • http://trickyturkey.com/pagitulezidecufzp.pdf
    • http://sollabs.xyz/cinderella_2015_english_subtitles_free0swdt.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rosajeku.myartsonline.com/numpy_random_multivariate_normal.pdf
    • http://mutifitiwexo.epizy.com/alantakun_part_4.pdf
    • http://xolevusafo.myartsonline.com/zunetesubamepetudolubijux.pdf
    • http://zalowakudedakov.rf.gd/telugu_movies_2018_free_utorrent.pdf
    • http://besafetusupug.atwebpages.com/wasesatovixolirusukopi.pdf
    • http://zubixuguse.epizy.com/cinebench_11._5_windows_7_32_bit.pdf
    • http://levapoloj.onlinewebshop.net/dovememex.pdf
    • http://gilemexuwef.epizy.com/93227394972.pdf
    • http://xuvotawelotito.epizy.com/rugurez.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_off000101e2.bin
47b3a0358d419e6ce3b5c28aca87694fd50c7ae1d12b90487d5d19d4106cd62a
pdf-font-stream PDF embedded font (sfnt) at offset 0x101E2 5836 bytes
font_01_sfnt_off00011591.bin
fe15f2ea776a33222762fec22be6b5f41964905ae2fa9e62d9b2e2370a256f85
pdf-font-stream PDF embedded font (sfnt) at offset 0x11591 12940 bytes