Malicious PDF — malware analysis report

Static analysis result for SHA-256 730a63fcd705a4c8…

MALICIOUS

PDF

68.7 KB Created: 2020-11-13 02:11:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 12f6998b841d208ab3fdb47a491bd367 SHA-1: 7a3adcdb5f3da3927b99233fc251750d5b6ebe60 SHA-256: 730a63fcd705a4c88687ece62c07a2d9aa93f0e3328487eed1b3cc4ccb38f82d
116 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. The 'SE_CALLBACK_LURE' heuristic strongly suggests a callback phishing or tech-support scam attempt by prompting the user to call a phone number. While no scripts were extracted, the presence of an external URI pointing to 'traffnew.ru' indicates a potential command and control or redirection endpoint.

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
  • 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://traffnew.ru/123?utm_term=used+restaurant+equipment+west+palm+beach PDF link annotation
    • https://fikifiwokadekaw.weebly.com/uploads/1/3/4/5/134585034/4650573.pdfIn PDF document text
    • https://fiselowozol.weebly.com/uploads/1/3/4/3/134366189/zamazulo.pdfIn PDF document text
    • https://norumevi.weebly.com/uploads/1/3/0/9/130969469/d42dd72f2a.pdfIn PDF document text
    • https://gunarolapikomi.weebly.com/uploads/1/3/4/4/134442839/425dbc4.pdfIn PDF document text
    • https://rimenedefogifu.weebly.com/uploads/1/3/4/4/134466040/webojede_gezizobinop_dopeve.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/73dbbaeb-de34-4d34-b9da-8055822b8108/46356438846.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/the_alchemist_25th_anniversary_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/telecharger_attestation_pole_emploi_cesu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5cf23c6-0165-49b7-ab63-9f3ccc2a6761/50023618385.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/566fabaa-fbde-4955-a83c-8b370c34f015/tujureruzozo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d981afc-3aba-43e4-b256-2f4e04b648aa/benamamojirakozujuzalu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33a4fd89-ada0-431b-95b9-593eb3299c88/fojobufo.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/pa_callowhill_street.pdfIn PDF document text
    • https://s3.amazonaws.com/texifaxepag/military_alphabet_and_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/adding_a_gmail_account_to_iphone_6.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/animal_behavior_college_stage_6_exam_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/bevisemasika.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_off0000c6a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6A0 5664 bytes
SHA-256: a5793b897643c5d198e4be0a417c394ef45b50f783f671331f3fb1ef03ce1d9e
font_01_sfnt_off0000d9c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C6 12872 bytes
SHA-256: d1a5d406e93dd6b1cb84fc7fa6612d011eb5e9b254011c6c0b752ddcebab91c0

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