Malicious PDF — malware analysis report

Static analysis result for SHA-256 42696794a48bd90c…

MALICIOUS

PDF

84.2 KB Created: 2021-01-24 06:41:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 4065cec4eef96b2560172c2ca63e078a SHA-1: 2d953e82e4873fdec93db93be0e2fd2eb7aab3ec SHA-256: 42696794a48bd90c677b1f8b295ff9bf94a620997e6359b82628e304ca438517
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. The embedded URL and document body suggest a lure related to 'Comptia a certification all-in-one exam guide pdf'. The file likely serves as a malicious attachment, aiming to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffe.ru/123?utm_term=comptia+a%252B+certification+all-in-one+exam+guide+pdf PDF link annotation
    • https://cdn.sqhk.co/vawapisoxe/bijhbgg/rijiwogoladeloriti.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojiranat/hdhhO9t/wekedonatifin.pdfIn PDF document text
    • https://cdn.sqhk.co/seworani/TwiaMja/cowboy_chicken_coupon_forney.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495686/normal_5fdee4c92d2d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444649/normal_600cc29dc7d48.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458848/normal_6003ffa847316.pdfIn PDF document text
    • http://sijowusim.22web.org/gelupalagumapakuwatopewa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vidadaviwal/nuwaneregoxemuzonasebejij.pdfIn PDF document text
    • http://jemumanapumaze.epizy.com/95852011396.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/70135213556.pdfIn PDF document text
    • http://povasapodojika.epizy.com/factory_reset_sony_android_tv_with_remote.pdfIn PDF document text
    • http://jawedujap.rf.gd/maps_maroon_5_piano_sheet_music_easy.pdfIn PDF document text
    • http://tepisivud.epizy.com/south_carolina_dmv_form_4030.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/best_camera_app_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/attached_file_email_formal.pdfIn PDF document text
    • http://lajirobodogew.epizy.com/wamafegej.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/baahubali_1_hd_video.pdfIn PDF document text
    • https://s3.amazonaws.com/wakuzidi/rezugumogeboginid.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/sexopakosabidujafutakesur.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB7 5304 bytes
SHA-256: b5fe5e9721b86c8a190d8da4b10480c4d3e6933d5df4431d4a615a8ed183791f
font_01_sfnt_off00010eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EAA 11544 bytes
SHA-256: 27004934153d0b58a69c152e6f572991a5eb58bc0ea07a451f310d0a42305919
font_02_sfnt_off000134dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134DD 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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