Malicious PDF — malware analysis report

Static analysis result for SHA-256 832282d75c16a1e8…

MALICIOUS

PDF

68.7 KB Created: 2021-03-06 14:52:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: b76aa7865eb6c6728b2bec0e34cc0ab2 SHA-1: 9f079c36f3cc2c701c27002d787aae75a7bf833f SHA-256: 832282d75c16a1e863977b83114926035d11098f16a8eb7566a6128e2246349a
126 Risk Score

Malware Insights

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

The PDF document is identified as malicious by ML classifiers and ClamAV, and contains numerous embedded URLs pointing to disposable hosting domains. The document body, though heavily obfuscated, appears to be a lure for a "Peavey Vypyr 2 manual" to direct users to these malicious sites. The presence of external URIs and link farm heuristics strongly suggests a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/123?utm_term=peavey+vypyr+vip+2+manual PDF link annotation
    • https://jawutasujo.weebly.com/uploads/1/3/0/9/130969833/d016f03a5b64c8.pdfIn PDF document text
    • http://tomesopinobiz.iblogger.org/what_episode_does_elena_own_the_salvatore_house.pdfIn PDF document text
    • https://lerugusenexeke.weebly.com/uploads/1/3/5/3/135317851/xiwino.pdfIn PDF document text
    • https://rimofemosi.weebly.com/uploads/1/3/4/3/134351632/vopuxa.pdfIn PDF document text
    • https://sakurulemiba.weebly.com/uploads/1/3/0/9/130969926/4473367.pdfIn PDF document text
    • https://voxonevixes.weebly.com/uploads/1/3/4/3/134383310/3294152.pdfIn PDF document text
    • https://mojakoxo.weebly.com/uploads/1/3/0/7/130739052/gosos.pdfIn PDF document text
    • http://bilapak.66ghz.com/blockly_games_bird_level_9_answers.pdfIn PDF document text
    • https://tiwabegi.weebly.com/uploads/1/3/0/8/130874513/db725dce55.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kupemamenigasi.rf.gd/wijaxesopufejag.pdfIn PDF document text
    • http://lekedoxe.rf.gd/53330685646.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39d7341d-4b04-405d-8904-969e4c5bf1fb/30145078552.pdfIn PDF document text
    • http://fowagamop.rf.gd/30271327269.pdfIn PDF document text
    • http://riporem.epizy.com/besomumoxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ddf296c-0855-4ad4-ae6d-291749c6e22e/23520799792.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9d658e1-deef-43bd-b24d-4ab0c414fb41/90133278260.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2f77f1f-4ccf-43b1-ad38-79b28dad3cf6/lamonuwarumasevilujuk.pdfIn PDF document text
    • http://jawegoxizifiti.epizy.com/pirate_king_generator.pdfIn PDF document text
    • http://fifowubijevajiz.epizy.com/how_to_set_up_my_account_with_revenue_canada.pdfIn PDF document text
    • http://pefafimu.rf.gd/best_android_phone_under_15000_december_2018.pdfIn PDF document text
    • http://xigesema.epizy.com/bosopovafemexalubutam.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_off0000d005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD005 5084 bytes
SHA-256: 7ab1de2eb883f0294ab32b2b34d9f55133831159cb5a069074ccdaae493a3a11
font_01_sfnt_off0000e14a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE14A 10592 bytes
SHA-256: 9b7c0f9730cbde152b48e862262e014791a9c1c23cbd7f9643c2b2046a63a2c4

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