Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba70fab4c11bfeae…

MALICIOUS

PDF

74.5 KB Created: 2021-03-04 15:01:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 86a0da4cb54c4d557df08184b480bc01 SHA-1: c7292bf765d72eb9d1d3e61bbbca57ac81d2bf6a SHA-256: ba70fab4c11bfeae81333032bc0a884fe4e8a5eec3158b9dc08d94c5a4e46204
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to "Guess the picture game answers" to encourage user interaction with the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jumiwimov.ru/123?utm_term=guess+the+picture+game+answers PDF link annotation
    • https://cdn.sqhk.co/fezavomol/hjfr8bh/stickman_spider_hero.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402517/normal_5fe4740037fdd.pdfIn PDF document text
    • https://cdn.sqhk.co/gegawudaxaxi/iieFiif/bewusalogumefus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453328/normal_603036b73836c.pdfIn PDF document text
    • https://cdn.sqhk.co/vakenuda/aw5ghgf/67979780680.pdfIn PDF document text
    • https://cdn.sqhk.co/dijogiper/giToNaW/devexozedip.pdfIn PDF document text
    • https://cdn.sqhk.co/pefisemise/jfjd0he/39047955619.pdfIn PDF document text
    • https://cdn.sqhk.co/wusoxopejezo/gggjcUW/381728142.pdfIn PDF document text
    • https://cdn.sqhk.co/rijomawonuj/6hjdijT/zazudobopugopevofukisok.pdfIn PDF document text
    • https://cdn.sqhk.co/zepigelona/dhihaas/lion_king_runtime_without_credits.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojelawov/WYjdibZ/instagram_followers_boost_online.pdfIn PDF document text
    • https://cdn.sqhk.co/xasakeza/i6hjgc2/best_stylish_text_app_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/woleparos/ieaibcV/swertres_hearing_guide_for_tomorrow.pdfIn PDF document text
    • https://cdn.sqhk.co/saboxiwago/chhYxaD/toolbox_murders_case.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/ji6qhb2/sector_144_noida_metro_station.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxodokoju/B01twha/67885454659.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369643/normal_5fdb529d238a9.pdfIn PDF document text
    • https://cdn.sqhk.co/fidasawon/rwjidF5/business_operations_manager_job_duties.pdfIn PDF document text
    • https://cdn.sqhk.co/definuseju/geCgjhi/blackberry_content_transfer_app_ios.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408875/normal_601b0ac7994dc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/ths_physics_espina_kinematics_practice_problems_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/93448555285.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/kepekavukese.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/77382003286.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_off0000e480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE480 5436 bytes
SHA-256: 51a39e8f09132b47fafd7405904caad69003e8cf8381d5d7d444db10cf0cae36
font_01_sfnt_off0000f6ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6EA 11112 bytes
SHA-256: da9e1ff3a637b422a83239ae7231b494699d52ea820b7ec0f56c08d29746ef12

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