Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e218a04e29664ec…

MALICIOUS

PDF

73.2 KB Created: 2021-03-11 04:41:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0dfd330591c2615ffcc5d8f64f734405 SHA-1: 58bdcfb15290e74816d2272ec557dcef345d280e SHA-256: 9e218a04e29664ec42fa730045299e45c1ad785fb78b7b0d10dd410b5525ba25
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses brand-impersonation credential phishing. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://lekinimogasujif.weebly.com/uploads/1/3/0/7/130739945/b0a52147.pdf.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/wix?keyword=google+password+hacked+checker PDF link annotation
    • https://lekinimogasujif.weebly.com/uploads/1/3/0/7/130739945/b0a52147.pdfIn PDF document text
    • http://formverifiedbadge.com/la_mascara_de_la_muerte_roja_pelicula_completa_en_espaol5k5zo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402262/normal_6013e260dd22c.pdfIn PDF document text
    • https://seduzitatadobi.weebly.com/uploads/1/3/4/3/134371103/1296718.pdfIn PDF document text
    • https://wogizepi.weebly.com/uploads/1/3/5/3/135388010/9347801.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379837/normal_5fdf119fbda0e.pdfIn PDF document text
    • https://senorori.weebly.com/uploads/1/3/4/6/134641151/2242877.pdfIn PDF document text
    • http://wokanetavim.iblogger.org/gipizokepebuve.pdfIn PDF document text
    • https://rixotojar.weebly.com/uploads/1/3/0/9/130969533/1833259.pdfIn PDF document text
    • http://helpverifedbadges.com/115523138522mqe2.pdfIn PDF document text
    • http://giftcard-sale.store/a-_123_appendix_a_implementation_guideeaout.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407747/normal_5fed19a3c49c8.pdfIn PDF document text
    • http://bbcua.site/pibikuwatocrqfj.pdfIn PDF document text
    • http://voicebftyi.com/94147977807al513.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473919/normal_603c11732c4f9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/094eca22-502d-4f91-8b5b-ac56dfbe1442/what_spark_plug_briggs_and_stratton.pdfIn PDF document text
    • http://loreforozupole.epizy.com/football_games_2018_android.pdfIn PDF document text
    • http://sikirubuguje.epizy.com/71940149094.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaae1b7e-2774-4136-ba86-a8bbb4fe65b7/indiana_plagiarism_test_answers_2020_quizlet.pdfIn PDF document text
    • http://dopisudul.epizy.com/29026320235.pdfIn PDF document text
    • http://maxeses.rf.gd/accelerazione_centripeta_formule.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_off0000e242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE242 5520 bytes
SHA-256: d4dcfa7f465ca89c725ba38e977c813dd4f1998fd0197c9a7ed80db2961aa5c2
font_01_sfnt_off0000f51a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF51A 10068 bytes
SHA-256: 2b4e97bb0e2f1b04c063abc4c6d29114d5629438e6f33f1e0eae193defa82b5e