Malicious PDF — malware analysis report

Static analysis result for SHA-256 53299093ea7154aa…

MALICIOUS

PDF

120.5 KB Created: 2021-03-20 22:45:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71337e23e698989ca584eeef8c6ae01f SHA-1: ee18b9fd6f6e8b2eae755d8902f79f26cb7dfe7e SHA-256: 53299093ea7154aa77ed36f7b0bdb793dd8ea977322fc627e3bf8445fa4a78d7
116 Risk Score

Malware Insights

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

The sample is a PDF file flagged as malicious by ClamAV and an ML classifier. It contains heuristics indicating a callback phishing lure, suggesting the user should call a phone number related to a fake billing or security issue. An external URI was also extracted, pointing to a URL that appears to be part of the phishing infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://nipisod.ru/strik?utm_term=how+to+charge+intelligence+health+bracelet+m3
    • https://cdn.sqhk.co/rojarimeg/migmkhd/fuxudefurekew.pdf
    • https://cdn-cms.f-static.net/uploads/4420745/normal_603e48579377a.pdf
    • https://static.s123-cdn-static.com/uploads/4377933/normal_6004e724671d9.pdf
    • http://dufapun.22web.org/7913674307.pdf
    • http://lofitner.buzz/438179057570fjek.pdf
    • https://cdn-cms.f-static.net/uploads/4527859/normal_5fda8008495aa.pdf
    • https://cdn.sqhk.co/bebomopakax/kvLUiaV/99695569783.pdf
    • https://cdn.sqhk.co/dusimefosix/djgxwhb/best_racing_games_on_switch.pdf
    • https://cdn-cms.f-static.net/uploads/4388815/normal_6052794fa0e5e.pdf
    • http://xivusolokedujes.22web.org/akashaganga_malayalam_movie.pdf
    • http://fb-ig-violation.com/xivaromixya5r0.pdf
    • http://fegubel.iblogger.org/al_quran_bangla_english_arabic_free_download.pdf
    • http://xagekofa.iblogger.org/how_to_use_a_cricut_expression.pdf
    • https://cdn.sqhk.co/piravasufinu/d6ietjb/samurai_vs_zombies_defence_mod_apk.pdf
    • http://czecheducation.space/suzoxawijuwidedl4kp.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • http://tafujeloraxofo.epizy.com/movine.pdf
    • http://walusapo.epizy.com/greek_mythology_books_for_high_school.pdf
    • http://bisodusar.epizy.com/turixonosezagigakogoje.pdf
    • https://uploads.strikinglycdn.com/files/ed791f8e-d7d4-47fb-86ea-1b63888bad78/genie_co2_lift_parts_list.pdf
    • http://tumajazumi.rf.gd/how_to_remove_washing_machine_drain_hose_from_wall.pdf
    • https://uploads.strikinglycdn.com/files/598b3981-7034-4f02-9f3c-3733b3987200/is_there_a_sao_season_4.pdf
    • http://gevewodex.epizy.com/xetasulaj.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012893.bin
dc0562f79e046a5f2d974eb8a5c2c9dce3f52b9061e88eb226654f2efc1f59f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12893 19868 bytes
font_01_sfnt_off000168af.bin
fd4e99b64bd766d63ab05f0eddbb202364b59c62b932d54bb68d7c25b79b8ab3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x168AF 5392 bytes
font_02_sfnt_off00017af2.bin
3dc17ee9bfb3b377c836b37de3c22a20ad387fb5088588cd15eb567e8e631994		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17AF2 17684 bytes
font_03_sfnt_off0001b1af.bin
ca0bb856d51d4c440eb4e48db524e4b4a87bf80294704eab3ae97752e74326e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B1AF 16132 bytes
font_04_sfnt_off0001c6dd.bin
da9ec27e678c73a4ac5e8c7df8fe8425dd3ae6f59ea71f2b206cb0682d20cd77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C6DD 3052 bytes

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