Malicious PDF — malware analysis report

Static analysis result for SHA-256 da745e720b390ba2…

MALICIOUS

PDF

76.8 KB Created: 2021-02-16 07:01:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3938f8ffaa560cc6345395032e6a677 SHA-1: 537a5fe235d6bbb7bb852c637a57c5f5c7ab603d SHA-256: da745e720b390ba2ad92812ce6edc1689a13d2b7bf43988f7d907d48a3c68ff6
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, with multiple embedded URLs pointing to potentially malicious domains. The PDF structure and embedded content suggest an attempt to trick the user into clicking these links, which likely leads to a phishing site or a second-stage malware download. No scripts were extracted, but the presence of external URIs is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/wix?keyword=kritika+mod+apk+2020
    • http://se-mrush.com/walmart_money_card_wont_register3dwev.pdf
    • http://lotto-investclub.com/geometry_homework_answers_sladeres2xd.pdf
    • http://usacreditmonitoring.info/kewavivaxafynzdm.pdf
    • http://fdvsefwfrw.space/computer_science_principles_practice_exam_answers0nx0g.pdf
    • http://sushibara.net/colors_in_french_translations2l2f.pdf
    • http://icub.tech/sokujetanudenemugewabulddtba.pdf
    • https://cdn-cms.f-static.net/uploads/4382614/normal_5fda67466c529.pdf
    • http://myluckywin.site/sufuges24f9.pdf
    • https://static.s123-cdn-static.com/uploads/4500444/normal_5fc8bf7e9b844.pdf
    • https://cdn.sqhk.co/gejupajo/hhwifjf/accidental_spy_full_movie_online_free.pdf
    • https://cdn-cms.f-static.net/uploads/4406463/normal_60186b487d704.pdf
    • https://cdn.sqhk.co/bisegepamitu/gdjjcSm/jaberutenigu.pdf
    • http://wasukowoko.iblogger.org/animation_after_effects_free.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://regipikiwubadov.epizy.com/module_2_test_review_answers_math.pdf
    • http://gevalej.epizy.com/nidadiborabew.pdf
    • http://nalelib.rf.gd/abkari_act_kerala.pdf
    • http://sujotoginejo.rf.gd/bubojalonubaguwerepobi.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da45.bin
80960c5ef920dc812f40421d0c41ad5272b60f71c1256c1bdf7a11afd8d5b2df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA45 2880 bytes
font_01_sfnt_off0000e482.bin
5c394116d4104a32a744178217f78a1941af7a1bba745714678aaf23be8cd5b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE482 4768 bytes
font_02_sfnt_off0000f4aa.bin
63c517fe91e9b47a5b460e441741ef44548f2e0faa66d61d8281b0fab9597b2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4AA 10192 bytes
font_03_sfnt_off00011798.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11798 4324 bytes

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