Malicious PDF — malware analysis report

Static analysis result for SHA-256 25abbdc0d3f5c475…

MALICIOUS

PDF

203.1 KB Created: 2021-03-18 04:04:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec1835f71641b31800894929df162db3 SHA-1: e0a82a291775db86d48af95eb08bad2607499577 SHA-256: 25abbdc0d3f5c475e87a63aa7136a170f3c7ae0e685952b30291f0f79d48122b
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating an embedded external URI. The URI 'https://vilenefex.ru/wix?keyword=thermal+camera+flir+one+apk' suggests a lure related to a thermal camera, likely for phishing or a scam. Although no scripts were explicitly extracted, the PDF structure and embedded URI point towards a malicious intent to redirect users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9876

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vilenefex.ru/wix?keyword=thermal+camera+flir+one+apk
    • https://cdn.sqhk.co/silinetufid/chijif5/driving_school_academy_2017.pdf
    • http://kvadro63.ru/whirlpool_4.3_cu_ft_he_top_load_washer_wtw5000dw_reviewsxytny.pdf
    • https://zujefimobob.weebly.com/uploads/1/3/1/4/131453463/d188a7c2e3f9cc0.pdf
    • https://soneputud.weebly.com/uploads/1/3/1/4/131411150/6876899.pdf
    • http://walletelectrum.buzz/wikipedia_madame_gao4uuzr.pdf
    • http://forecast.bet/captive_prince_download_freezbwmj.pdf
    • https://zumizosapozogem.weebly.com/uploads/1/3/2/6/132681504/775b76bdc47e.pdf
    • http://lnstagramverifiedsbadgesforms.com/42175567787jl6p.pdf
    • https://sadebisoj.weebly.com/uploads/1/3/2/3/132302749/8d86e2d2ae5e7cc.pdf
    • http://lynciguest.com/the_secret_life_of_walter_mitty_actorksu0t.pdf
    • https://zuwuloju.weebly.com/uploads/1/3/2/6/132681456/a65409e3eaa3b.pdf
    • https://melivuwupazadog.weebly.com/uploads/1/3/4/7/134721584/4431082.pdf
    • https://cdn.sqhk.co/pelopuxi/bGBxJOx/96718069636.pdf
    • https://cdn.sqhk.co/dedogupazib/jijJzhe/9738376261.pdf
    • http://help-business-media.com/80939796710bliyw.pdf
    • https://fupefomaxoxaje.weebly.com/uploads/1/3/4/8/134897629/vodatejodu_lekevimej.pdf
    • https://kuvezuwuziteb.weebly.com/uploads/1/3/4/3/134388010/7714383.pdf
    • https://gimelasu.weebly.com/uploads/1/3/4/5/134513778/7101356.pdf
    • http://arenaprobet.com/36028739108aju1c.pdf
    • https://cdn.sqhk.co/terasovo/7hagjjd/paper_toss_world_tour_music.pdf
    • http://agreevudb.rest/94049577102p60qu.pdf
    • https://cdn.sqhk.co/jeforije/uihIZhe/kof_98_um_ol_hack_download_2019.pdf
    • https://lanasasaf.weebly.com/uploads/1/3/0/8/130815311/7587d1f8eb508.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://roparewuna.rf.gd/xolajorofadupitidufafomi.pdf
    • http://loletusu.rf.gd/devokixibos.pdf
    • http://zoratamit.epizy.com/21437311320.pdf
    • http://luwulifinuneti.epizy.com/garmin_s60_review.pdf
    • http://wixudilasajigil.rf.gd/how_to_make_powerpoint_presentation_for_interview.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002e20b.bin
2a6df817e8728f59660dcc90fa35ac8554cf318a464870057a6713c44d20442b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E20B 5088 bytes
font_01_sfnt_off0002f32f.bin
e73fb792de3c2c1503ef73fead00f7b997ea16285df2f1d7f517b8c4f5936173		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F32F 12692 bytes

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