Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e84863aaf72423b…

MALICIOUS

PDF

79.7 KB Created: 2021-04-03 18:09:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3807a86803b94f2ab8d3494a46ad36f2 SHA-1: 516563af79a6e2bd235e2841263fcd2fd19f4cff SHA-256: 6e84863aaf72423b2c1558eed9dd631e77bd3d4d4cc674a0e0f9d447f1cee116
156 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is a payment redirection lure, aiming to trick users into changing payment details. The presence of external URIs, including one pointing to 'botokaw.ru', suggests an attempt to contact a malicious server. Although no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/wix?keyword=wfb+cd+svc+address
    • https://static.s123-cdn-static.com/uploads/4474999/normal_5ffa9edc0ee6c.pdf
    • http://suwefazimim.medianewsonline.com/26233521796.pdf
    • https://cdn-cms.f-static.net/uploads/4454971/normal_60667b99187f0.pdf
    • https://static.s123-cdn-static.com/uploads/4495849/normal_6000b8f9b6975.pdf
    • http://liberum.sportsontheweb.net/44111478040.pdf
    • http://bitjoms.xyz/pre_algebra_practice_test_for_7th_gradeub5td.pdf
    • http://tokio-2020.fun/wosomop93f81.pdf
    • http://rerulekoba.66ghz.com/7984351405.pdf
    • http://difemetudanad.22web.org/hard_horror_movie_trivia_questions_and_answers.pdf
    • http://meweremidef.iblogger.org/70803382386.pdf
    • https://static.s123-cdn-static.com/uploads/4378619/normal_5fe1564a1b81e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vofimefokugof.epizy.com/fiweporu.pdf
    • http://bumilamufitilu.epizy.com/savopirulibipoxukixumob.pdf
    • http://pufaperimixalet.epizy.com/zotubotivaxifiwup.pdf
    • https://s3.amazonaws.com/patotale/nukejomovunavo.pdf
    • https://s3.amazonaws.com/dukavunivifa/86451969579.pdf
    • http://zepuwiz.atwebpages.com/luxexuwo.pdf
    • http://raxajabidadida.onlinewebshop.net/72011214435.pdf
    • http://jenofabejuvokag.epizy.com/avneet_kaur_video_song.pdf
    • https://s3.amazonaws.com/kugelilizibuwum/26769173075.pdf
    • https://s3.amazonaws.com/tiluwisulepam/27041696754.pdf
    • http://bavodokebak.rf.gd/commandos_1_2_3.pdf
    • http://degivenumi.epizy.com/casual_semi_formal_dress_code.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_off0000fae1.bin
d40d38f39c4f00a569881d5a130abb21d7a1147ea3a9bb40d87fa889fc90fd05		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE1 5196 bytes
font_01_sfnt_off00010cb1.bin
eacb886b130ee9a9d9e290b49199503623cd8f0311836145ce69cb6a888bf3d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB1 10908 bytes

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