Malicious PDF — malware analysis report

Static analysis result for SHA-256 971c8c84168b80e7…

MALICIOUS

PDF

76.1 KB Created: 2021-03-24 00:15:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb84aafea4ed3b3ee3326d714da729e8 SHA-1: d51055d488455585732c827f2ab20dc8371b03dd SHA-256: 971c8c84168b80e733df201ea2ee5d577de617e64eb569a2916f6379b8f20035
144 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a lure for an advance-fee scam, specifically mentioning prize/lottery language and parcel delivery requirements. It also contains an embedded URL that is likely part of the scam. While no scripts were directly extracted, the ML classifier and ClamAV detection strongly suggest malicious intent, likely involving a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://zajinet.ru/award?keyword=pdf+to+word+software+offline
    • https://cdn.sqhk.co/puxolika/mgjdjb1/bowling_championship_2020_3d_bowling_games.pdf
    • https://cdn.sqhk.co/fegojujor/ZidS8nG/29200876416.pdf
    • https://cdn.sqhk.co/kajurineg/hahbhaq/95289005837.pdf
    • http://jopulemasawo.22web.org/basic_catholic_catechism.pdf
    • https://cdn.sqhk.co/noneniwetav/f5ijgc7/34455095200.pdf
    • http://investorlands.ru/79113144476wl7cj.pdf
    • http://profapp.pro/posabizesedotoledubar7ainz.pdf
    • http://j3vnci4.xyz/77125185287qvjj8.pdf
    • https://cdn.sqhk.co/wuvexudid/dhjPKgc/83754070517.pdf
    • http://bekowakiged.iblogger.org/95406017055.pdf
    • http://tublitalia.space/giwolavebesovilu1yit.pdf
    • http://bepofikoguja.22web.org/addictive_drums_2_united_heavy_free_download.pdf
    • http://kubikox.iblogger.org/54225999781.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://damuduvusud.epizy.com/fuvakakubitetokag.pdf
    • https://s3.amazonaws.com/lowuwofuxali/soroxidakafagemu.pdf
    • http://lelisavebak.rf.gd/senior_speech_ideas_for_sports.pdf
    • https://uploads.strikinglycdn.com/files/0323a131-8278-4288-ba3d-d1b612b9fb05/10025430275.pdf
    • http://mifamin.epizy.com/cartesian_to_spherical_coordinates_transformation_matrix.pdf
    • https://s3.amazonaws.com/palikuvexake/google_bug_report_reward.pdf
    • https://uploads.strikinglycdn.com/files/804a552d-8430-4217-b9fb-73aa90ec044e/plantronics_c053_troubleshooting.pdf
    • http://muporomeg.rf.gd/dozusokajabotix.pdf
    • https://uploads.strikinglycdn.com/files/5df7448f-5fed-4cb3-b66c-2d0c864f63bd/14442312522.pdf
    • http://pegivaruxonozef.rf.gd/97688606209.pdf
    • https://s3.amazonaws.com/sefiwegegagu/ganamrutha_bodhini_english_book_online.pdf
    • http://gozixug.epizy.com/free_smoke_brushes_for_photoshop.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_off0000ebd9.bin
1f48f8bdbc689706802feba59b37840f6b1f614c5cbd4261fbb26de1971d0290		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD9 4992 bytes
font_01_sfnt_off0000fcf7.bin
97767749aeb15a0b955f9227170a1cf7a49c61fb8cf9f705e89e56e761fbefb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF7 10636 bytes

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