Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ff2036f2f8e5b5…

MALICIOUS

PDF

74.7 KB Created: 2021-03-10 21:10:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7071afd83473336cb015a9391dc5998a SHA-1: baa2bbd0d0267f59612ad864a8b13391ebd0cf4e SHA-256: 02ff2036f2f8e5b562467adff15c9336471ab83b3460ccb9d5777b08a97eed96
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to 'https://maypoin.ru/award?keyword=affairscloud+pdf+june+2020', which is likely a phishing lure. The document body is heavily obfuscated, preventing a clear understanding of its specific content, but the presence of the malicious URL and the high risk score indicate a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/award?keyword=affairscloud+pdf+june+2020
    • http://pokezokebawi.mygamesonline.org/how_to_replace_a_poulan_chainsaw_oil_pump.pdf
    • http://delinapod.mypressonline.com/libro_de_ingles_basico_para_nios_de_primaria.pdf
    • http://bubble1.space/crib_bedding_sheetsw7i3y.pdf
    • http://kanaxade.mygamesonline.org/42681165130.pdf
    • https://static.s123-cdn-static.com/uploads/4390056/normal_5fee0e4c31620.pdf
    • https://cdn-cms.f-static.net/uploads/4379605/normal_5fea3850a4eee.pdf
    • http://scandisvet.ru/cube_call_recorder_mod_apk1vleo.pdf
    • https://cdn-cms.f-static.net/uploads/4478408/normal_602d66349e18c.pdf
    • http://pubgucbayim.com/passport_application_ielts_reading_answersbf5ty.pdf
    • http://fibilif.iblogger.org/voxalurajonegurafat.pdf
    • http://jusukigib.sportsontheweb.net/28266751195.pdf
    • https://cdn-cms.f-static.net/uploads/4413866/normal_5fd95bf3a19da.pdf
    • https://static.s123-cdn-static.com/uploads/4403819/normal_5fffbe116a9f0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wisuw/learn_english_vocabulary.pdf
    • https://s3.amazonaws.com/regufojalojaza/finawajezivuf.pdf
    • https://s3.amazonaws.com/jarirotexab/determine_the_centroid_of_the_shaded_area_yx3.pdf
    • http://fogesogorukob.epizy.com/nombre_rationnel.pdf
    • https://s3.amazonaws.com/roware/19921847105.pdf
    • https://s3.amazonaws.com/punurum/free_illustrator_infographic_template.pdf
    • https://s3.amazonaws.com/jigezilor/kijafinorovi.pdf
    • https://s3.amazonaws.com/jopomodilamego/tawotes.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_off0000e55d.bin
0639bb34c2abb5364b346a3e7fa54c04180ae410160abc628c6f02c473c7a0c1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE55D 5488 bytes
font_01_sfnt_off0000f821.bin
3f265d2e8de61b405a5add4188768e4f9afca1abe20ef735ae40b51a752a5967
pdf-font-stream PDF embedded font (sfnt) at offset 0xF821 11132 bytes