Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a0c89617dd43f2c…

MALICIOUS

PDF

82.4 KB Created: 2021-03-18 21:35:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3b32eaf177495dc5eef175ac2849888 SHA-1: 8ec9d0b69de33b1478fac1ef56d1ef2070cde1cc SHA-256: 7a0c89617dd43f2ccde1e97d6320b7023d4b95be8b9b96578c9611bc8b3e5174
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, with heuristics indicating it's an advance-fee scam lure. The document body, though heavily obfuscated, contains references to 'Thinkorswim vs robinhood' and application metadata, suggesting a potential phishing or social engineering pretext. The embedded URL points to a suspicious domain, likely part of the scam infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://ponafet.ru/strik?utm_term=thinkorswim+vs+robinhood
    • https://cdn-cms.f-static.net/uploads/4417305/normal_601178b9e4152.pdf
    • http://wwbook.org/easy_guitar_tabsq0zxp.pdf
    • https://static.s123-cdn-static.com/uploads/4369165/normal_5fce981f1377e.pdf
    • http://poguvezi.22web.org/dell_e6410_i5_specs.pdf
    • https://cdn-cms.f-static.net/uploads/4413473/normal_6020bd306dfff.pdf
    • http://inostrana.com/pedagogy_of_physical_science_notes_pxizfl.pdf
    • https://cdn.sqhk.co/dimumaneda/gehejag/71581006288.pdf
    • http://f1l3download.site/16577050531cotee.pdf
    • https://cdn.sqhk.co/foseziwate/iaMzhju/dumapuwezujesakumizorud.pdf
    • https://cdn.sqhk.co/wiluxuko/exifzgj/counter_terrorist_attack_death_mod_apk.pdf
    • https://cdn.sqhk.co/detatakev/ehg6sHT/xixewusojatovakokodupali.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/xamibebulosaxug/kivezuzuzi.pdf
    • http://gitinilu.epizy.com/mixuwekef.pdf
    • https://s3.amazonaws.com/nitizobuv/semojumuwo.pdf
    • https://s3.amazonaws.com/lolaritemukole/lecuona_gitanerias_sheet_music.pdf
    • http://vupikefugogulup.epizy.com/22869580888.pdf
    • https://s3.amazonaws.com/wusone/jejigozitutel.pdf
    • http://gikuxoxabak.epizy.com/luzeguvog.pdf
    • https://s3.amazonaws.com/rufonali/83385565994.pdf
    • https://s3.amazonaws.com/pexodugosa/65303943955.pdf
    • https://s3.amazonaws.com/sejakopa/racq_caravan_insurance.pdf
    • https://s3.amazonaws.com/juzewojavomofew/driver_bluetooth_win_10_hp.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6f7.bin
439b12af528a4139d5d2ee6a5a4adcc5d71d1948f351e99bab961a1ea3f7ad31		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F7 4716 bytes
font_01_sfnt_off000106bf.bin
f23abb4d0ee793156e76161869b231bc931a06e61331328bfe2a3a3982d05f89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106BF 11612 bytes
font_02_sfnt_off00012e29.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E29 4324 bytes

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