Malicious PDF — malware analysis report

Static analysis result for SHA-256 06197ae833d93961…

MALICIOUS

PDF

75.7 KB Created: 2021-03-02 06:02:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 6bf5ca54c8a24e3c32934c61895b7477 SHA-1: 4f45ed56ee5d13c79b80dab7e25909411ae011bd SHA-256: 06197ae833d93961f18becacf40c2a684185699426079ce2b608e8f51c415b76
126 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it's a link farm on disposable hosting, with a high ML score and ClamAV detection as a phishing trojan. The embedded URL points to a suspicious domain, likely intended to redirect the user to a malicious site. Although no scripts were explicitly extracted, the PDF structure and external links suggest a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/strik?utm_term=sabina+unbearable+lightness+of+being+quotes PDF link annotation
    • http://fojudesekuxujef.22web.org/zixagipelaxon.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/dBjiii2/pokemon_go_arlo_counters_march_2020.pdfIn PDF document text
    • https://ziposubiv.weebly.com/uploads/1/3/0/9/130969570/054e5.pdfIn PDF document text
    • http://nititesosorejiw.iblogger.org/2005_dodge_ram_1500_fuel_tank_replacement.pdfIn PDF document text
    • https://cdn.sqhk.co/gabadifofibo/EuThbZl/numigafujonimasejiru.pdfIn PDF document text
    • https://vijunefuk.weebly.com/uploads/1/3/4/5/134588972/9008714.pdfIn PDF document text
    • https://cdn.sqhk.co/lomokubaf/djbjiif/pictoword_level_488.pdfIn PDF document text
    • https://cdn.sqhk.co/gepeduvo/halicHC/47666093416.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/rakabexozu/intermatic_t104p3_pool_timer_manual.pdfIn PDF document text
    • http://dutugege.epizy.com/blueskysea_b1w_manual.pdfIn PDF document text
    • http://rogofijanititad.epizy.com/70440981578.pdfIn PDF document text
    • http://bimegisekew.epizy.com/google_sheets_sumifs_greater_than_cell.pdfIn PDF document text
    • http://bupegofawex.rf.gd/us_army_special_operations_command_central.pdfIn PDF document text
    • https://s3.amazonaws.com/mosezavor/pudin.pdfIn PDF document text
    • http://vosowetawevu.epizy.com/87267901508.pdfIn PDF document text
    • http://nilezowavegat.rf.gd/escape_room_level_32_answer_giraffe.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_off0000eb8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8C 5396 bytes
SHA-256: 092b29dd126ac234a591390fcd3c2646f55333f8e08968fce4f3dc1d19581efe
font_01_sfnt_off0000fdd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD7 10364 bytes
SHA-256: 60e116b78143806a992ba40de26cef4cabd52efe0ebd590183827d54c7a33efc

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