Malicious PDF — malware analysis report

Static analysis result for SHA-256 e512d63c30559e66…

MALICIOUS

PDF

74.3 KB Created: 2021-03-28 00:31:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2c1cf089761b63391705168049314e7 SHA-1: 7281ff2ddb3da5b9a076149d054307269d8dab84 SHA-256: e512d63c30559e6675c49ee8c98f67aa041c370268260234339da67ab7b258a6
96 Risk Score

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 URL that directs users to a suspicious domain, likely for credential harvesting or malware distribution. The document body, though heavily obfuscated, appears to be related to exam results, suggesting a social engineering lure.

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://mezovuduw.ru/award?keyword=rsmssb+ldc+answer+key+pdf+paper+i+and+ii
    • https://tefafovok.weebly.com/uploads/1/3/4/5/134588422/872f81f8339f9f.pdf
    • http://vatosake.iblogger.org/garebekojegu.pdf
    • http://silvanozito.online/nokagarijolikfddm7.pdf
    • http://fragcups.com/free_birthday_party_invitation_template_psduefgy.pdf
    • http://7gusevshop.space/exponents_worksheets_college_algebrai24be.pdf
    • https://cdn.sqhk.co/duditizonut/ijvjfhi/84060669831.pdf
    • https://cdn.sqhk.co/pozusonitid/Dxd2Rhd/littlest_pet_shop_snail_128.pdf
    • http://erse.xyz/sennheiser_rs_175_over-ear_sound_isolating_wireless_headphones_reviewgrcfa.pdf
    • https://static.s123-cdn-static.com/uploads/4427076/normal_6003a364d1c50.pdf
    • https://molujeridinu.weebly.com/uploads/1/3/4/4/134400438/4149805.pdf
    • https://static.s123-cdn-static.com/uploads/4478667/normal_5fc7d055ef662.pdf
    • https://cdn.sqhk.co/rolileduvof/VieLZid/89050859444.pdf
    • https://cdn-cms.f-static.net/uploads/4423166/normal_604d9b1f1bb8f.pdf
    • https://lasirobazu.weebly.com/uploads/1/3/4/3/134399905/331ccdcbd.pdf
    • http://ulekschool.online/the_handmaids_tale_chapter_14eqqkr.pdf
    • https://cdn.sqhk.co/suwojixuwebi/tqhjjhf/top_multiplayer_fps_pc.pdf
    • https://cdn-cms.f-static.net/uploads/4466165/normal_6027ac716adab.pdf
    • http://risejesifisem.22web.org/lubowamebofu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://memavopunon.rf.gd/weekly_tax_table_2017_excel_format.pdf
    • http://bakenexiradofo.epizy.com/baciloscopia_seriada.pdf
    • http://vafosune.rf.gd/6565940269.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_off0000e20a.bin
df9f933c1a869c6c788e23f3a31cbac8aa320935f10dddd6b0d830d13a9eeeca
pdf-font-stream PDF embedded font (sfnt) at offset 0xE20A 5704 bytes
font_01_sfnt_off0000f573.bin
b2d30173deb49829d3eecc57e41aeb4e2eeed651e1a47dc26d5c1f4a801556bc
pdf-font-stream PDF embedded font (sfnt) at offset 0xF573 10768 bytes