Malicious PDF — malware analysis report

Static analysis result for SHA-256 f83fddb1d72710a8…

MALICIOUS

PDF

74.8 KB Created: 2021-03-18 03:33:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b922565769eb4960adc0d1aa849d85a3 SHA-1: 9b022b081a51e8ace47a09f23c5aeb1d62cd0223 SHA-256: f83fddb1d72710a84cfc9db1856cdaceacb7de88568f3464190e174296a09adb
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URL that leads to a domain associated with phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'customer lifetime value excel template', indicating a phishing or social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dafemum.ru/123?utm_term=customer+lifetime+value+excel+template
    • https://cdn.sqhk.co/fukonovum/qhiZCCr/5226197745.pdf
    • http://axecheat2.xyz/70353996398rpoem.pdf
    • http://mefamonode.iblogger.org/jakanaxenomapiputawisadus.pdf
    • https://cdn.sqhk.co/ludozenidi/bViiSBW/79561390851.pdf
    • http://shoop-fl.ru/car_racing_simulator_onlineay0l5.pdf
    • http://vknacruckalaikov123.xyz/pijasewuliroguxefajuk92c2.pdf
    • http://momentshop.space/bootstrap_css_login_templates_freekk426.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://8bd0dbf5-62e0-4684-a95a-1d9666dfa34a.filesusr.com/ugd/e71694_f287da51c51b4815ae3909230fa32e4f.pdf?index=true
    • https://s3.amazonaws.com/fifuto/15601331330.pdf
    • http://zopubesufo.epizy.com/xaxukoxepo.pdf
    • https://uploads.strikinglycdn.com/files/31a81a2d-4656-43a2-8efc-a1fa1949c37c/tusoziwakorejiroxajuf.pdf
    • https://s3.amazonaws.com/lanorolowu/forwarded_call_alert_apk.pdf
    • https://s3.amazonaws.com/geraromu/jebavetakojuxaxako.pdf
    • https://uploads.strikinglycdn.com/files/6bcc9dcb-6e8c-4699-b9d6-57da560e91a2/descargar_musica_de_los_tucanes_de_tijuana_la_seora_de_acero.pdf
    • http://bigebuwew.epizy.com/wixepezefusebozim.pdf
    • https://a62e46b8-d933-4087-892c-e5439cec6991.filesusr.com/ugd/e9cba9_7b5e46ae9da143ba843708cf646b30ed.pdf?index=true
    • https://uploads.strikinglycdn.com/files/6cbf27f8-7592-4b99-8b2d-642a4507895b/wudetadatabenafe.pdf
    • https://uploads.strikinglycdn.com/files/3efc6879-7bca-487f-a520-3729d875a317/sogosaki.pdf
    • https://uploads.strikinglycdn.com/files/086d5b0f-f437-4452-ab85-b8a497332688/epson_artisan_810_manual.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_off0000e373.bin
7f7112ccbbaea0b49400af2a92525a0dcf1a30979548068a1b9411a181c29bf3
pdf-font-stream PDF embedded font (sfnt) at offset 0xE373 5192 bytes
font_01_sfnt_off0000f510.bin
1384d3bf7108c119028bc2b9f8be98df5d8024a6029b80a7bd8ccaa247614faa
pdf-font-stream PDF embedded font (sfnt) at offset 0xF510 11684 bytes