Malicious PDF — malware analysis report

Static analysis result for SHA-256 89afd9cd0bc4fac4…

MALICIOUS

PDF

189.4 KB Created: 2021-03-22 23:18:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a24183f517e8d85ed8c4cbffc567c48 SHA-1: 40ece47633fc456a3f98e6dbeedf3d44a142ba70 SHA-256: 89afd9cd0bc4fac4ae72576e403541f2534d2de87a9f3369e5ed83a77ef6e99b
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. The heuristics indicate it uses an advance-fee scam lure, likely to trick users into clicking embedded URLs. The presence of PDF_URI and EMBEDDED_URL findings suggests the document contains links to external resources, which are likely malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://leonvi.ru/wix?keyword=clash+of+kings+civilization+guide
    • https://cdn.sqhk.co/ruvonusebex/hbIrMie/facebook_messenger_auto_reply_personal_account_2019.pdf
    • https://cdn.sqhk.co/lakekomum/idjjxVf/mcat_registration_2020_pakistan.pdf
    • https://cdn.sqhk.co/lakivasulis/jhhmhhH/luwofu.pdf
    • https://cdn.sqhk.co/mikevoponage/6F9ibge/bolobopireb.pdf
    • http://bigever.iblogger.org/a_horseman_in_the_sky_by_ambrose_bierce.pdf
    • https://cdn.sqhk.co/parabeset/WJTjghf/twitter_viral_videos_this_week.pdf
    • https://cdn.sqhk.co/nutewakizi/isWUifK/97048230787.pdf
    • https://cdn-cms.f-static.net/uploads/4489983/normal_6056c1ff9251a.pdf
    • https://cdn.sqhk.co/dolitife/jojdhbl/the_joker_hd_wallpaper_download.pdf
    • https://cdn.sqhk.co/zodavujera/gU9hgvE/hiroshima_atomic_bomb_video.pdf
    • http://xowanopumug.22web.org/aircraft_structural_technician_dale_hurst.pdf
    • http://mupoxebetofe.iblogger.org/the_risk_of_incorrect_acceptance_and_the_risk_of_overreliance_relate_to_the.pdf
    • https://cdn-cms.f-static.net/uploads/4491686/normal_6032056630b6a.pdf
    • https://cdn.sqhk.co/tirekidifole/jbXTk1M/1173408730.pdf
    • https://cdn-cms.f-static.net/uploads/4476446/normal_5fdc165320b8e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xorifexudizig.rf.gd/galixexubatanu.pdf
    • https://6593eeda-10fe-4128-810f-cbbc79f0a4f8.filesusr.com/ugd/c0a4bf_52489db6935740d3a16ce5bd398a9f12.pdf?index=true
    • https://d05b2b94-0af3-401c-a6ef-75d00d0b58ae.filesusr.com/ugd/3bca44_c017032e1fc24b068a8d6405c5585e98.pdf?index=true
    • http://jonegukum.epizy.com/cloudformation_iam_role_policy.pdf
    • http://lokakowevokeb.epizy.com/diabetes_mellitus_2.pdf
    • https://72858ab8-d36f-4bc2-b208-e5ec56e76d01.filesusr.com/ugd/3a4e0e_24ad303ad47b4968b74956868e025f78.pdf?index=true
    • http://vonodese.epizy.com/56393325753.pdf
    • http://tamikukezinubi.rf.gd/12992112734.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_off0002ac91.bin
6248fa15e29b9f99d19f975a7e895d6eb7491bd52d987fdd253f22e1397b9a25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC91 5268 bytes
font_01_sfnt_off0002be8d.bin
2570f071f3c268f34740ae4079d9adf979cd371c398ddd0791b8f971071d0de1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE8D 12892 bytes

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