Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecce83f0cc12b0ee…

MALICIOUS

PDF

71.2 KB Created: 2021-03-12 05:53:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 4c7c1c30be8e83fc19d870e6e231e437 SHA-1: a4f8d73bf87c5fd958029a6c754a9ec5a42fa098 SHA-256: ecce83f0cc12b0eea8b75dfd75413fb3e4c9ec476391afffbc602287e33145a0
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with a primary external URI pointing to 'fokemale.ru', suggesting it functions as a lure to a phishing or malware distribution site. The document body, though heavily obfuscated, contains terms related to 'Stihl ms 250 parts', likely a deceptive pretext to drive traffic to the malicious URL.

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://fokemale.ru/strik?utm_term=stihl+ms+250+parts PDF link annotation
    • https://cdn.sqhk.co/jadepibake/gi76lre/horse_racing_manager_2020_secret_challenges.pdfIn PDF document text
    • https://lemapola.weebly.com/uploads/1/3/1/4/131407815/6685697.pdfIn PDF document text
    • https://viwifigejemi.weebly.com/uploads/1/3/0/8/130814408/soper-betuzan-duraz.pdfIn PDF document text
    • http://lirebuwoke.mygamesonline.org/tobalamuvosusedibaxok.pdfIn PDF document text
    • https://pevidutapare.weebly.com/uploads/1/3/0/7/130740538/1117810.pdfIn PDF document text
    • https://zujomesesewega.weebly.com/uploads/1/3/4/9/134902804/xusuzeziwejag.pdfIn PDF document text
    • http://zuviwadakaji.22web.org/why_is_it_important_for_police_officers_to_write_detailed_reports.pdfIn PDF document text
    • https://cdn.sqhk.co/ripalufix/b5w0ghY/best_recharge_offers_for_vodafone.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kenamumiv.rf.gd/19680098445.pdfIn PDF document text
    • http://ligujizulogi.atwebpages.com/lixokodonajukorir.pdfIn PDF document text
    • http://jezirateba.rf.gd/20798515123.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/fowevoxazimu.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/books_when_breath_becomes_air.pdfIn PDF document text
    • http://rowomasogig.epizy.com/bolujoziwufixosamos.pdfIn PDF document text
    • http://jixenefotudak.epizy.com/55303546097.pdfIn PDF document text
    • http://tuwutexo.onlinewebshop.net/ars_notoria_game.pdfIn PDF document text
    • http://tejusadesivuti.epizy.com/cisco_anyconnect_mac_high_sierra.pdfIn PDF document text
    • http://nimitijas.rf.gd/cyberpunk_2020_release.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_off0000d613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD613 5560 bytes
SHA-256: 739607b7b5d8252f018eb6504c17e0ee00713fe07e0218aa7d5066a8337b7648
font_01_sfnt_off0000e8ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CA 11740 bytes
SHA-256: a7631a98f0d9a99b4477ec2a8085ace6390c4583254251b2e825bdcbb370beb5

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