Malicious PDF — malware analysis report

Static analysis result for SHA-256 04a77424051706e9…

MALICIOUS

PDF

85.6 KB Created: 2021-04-05 02:20:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 009b3f1c1ccd9af36f69c7eb132638cc SHA-1: 5ad22be3eb5468f86392744e6b26fc3707fd9e73 SHA-256: 04a77424051706e9a28817b1b976efcf13448a048e938a2c6c887f37aff06219
136 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, exhibiting characteristics of an advance-fee scam. The document body, though heavily obfuscated, contains keywords related to prizes and deliveries, aligning with the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic. While no scripts were explicitly extracted, the presence of embedded URLs suggests potential redirection to malicious sites or further payload delivery, which is a common tactic for PDF-based malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://cdn.sqhk.co/semiwewedazi/diflhim/whatsapp_status_punjabi_song_video_download_2020_free.pdf
    • https://cdn.sqhk.co/nogorodizet/jbgdpgh/virtual_dj_mixer_free_download_2020.pdf
    • https://genopajixon.weebly.com/uploads/1/3/1/4/131452954/zinefekadak.pdf
    • https://static.s123-cdn-static.com/uploads/4461761/normal_5feb9f6138be4.pdf
    • https://cdn.sqhk.co/limizolaxa/jb2prjj/moto_hill_racing_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4393026/normal_602b3c125a6d2.pdf
    • https://static.s123-cdn-static.com/uploads/4426966/normal_60029dfa0ef78.pdf
    • https://cdn.sqhk.co/metexemoraga/dMu0hiL/used_dining_chairs_near_me.pdf
    • https://pulezigo.weebly.com/uploads/1/3/4/6/134600697/29fad11808a59.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://feedproxy.google.com/~r/wb/ENAH/~3/kMuynZNWtA0/wb?keyword=what%20is%20decolonising%20the%20mind
    • https://uploads.strikinglycdn.com/files/9637afb1-043c-4d1b-b5e3-e48c5d303e56/why_did_netflix_remove_grinch.pdf
    • http://morukigivarili.rf.gd/genetica_molecolare_umana_zanichelli.pdf
    • https://979cd01f-16ea-4d2c-b189-234964c95597.filesusr.com/ugd/d4c4cf_880d4ada851d401eb1d43dbeec0e6bfc.pdf?index=true
    • https://4a0f17ac-6ce6-4c05-9546-25c48d39d9f7.filesusr.com/ugd/cd79e3_e965bdf26cfb4f9892c9d55f9e099501.pdf?index=true
    • https://uploads.strikinglycdn.com/files/2520859c-0886-44de-96fa-841c0f3bbf42/xaxixemukawimefival.pdf
    • https://4ef57e19-9a2e-4e6f-a444-f6b59f982a39.filesusr.com/ugd/4c1554_ea7c1be4ab614ca89fc617e1e406d5d9.pdf?index=true
    • https://uploads.strikinglycdn.com/files/1c5883ee-f017-4b2f-bed6-28f89d4b436b/is_my_data_safe_with_the_nhs_covid-19_app.pdf
    • http://xazerusovugidu.epizy.com/bediduti.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_off0001117f.bin
33f22ada77c6c0752a04ba08703c42f6993ec7682cf1c7a00d728e71715b53f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1117F 5272 bytes
font_01_sfnt_off00012350.bin
bd7e154f71fca47968e93abdb14db8574d90837b69033e0cfc6e53763c9794c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12350 11428 bytes

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