Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae4dc8b92ce91ad1…

MALICIOUS

PDF

102.0 KB Created: 2021-06-04 17:02:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 490dac50b80e16be3a774df3f4613fa3 SHA-1: 7bcfeb89369ad501256c67a330b9d1a922f251c2 SHA-256: ae4dc8b92ce91ad10ce4cd392bcf93a97390245c409b2b9d342d40f0e3da2dea
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI pointing to 'garglob.ru', which is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'the crucible act 3 photo analysis', suggesting a phishing or social engineering lure. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://garglob.ru/pbw?utm_term=the+crucible+act+3+photo+analysis
    • https://cdn-cms.f-static.net/uploads/4415334/normal_604634b0bedb5.pdf
    • https://cdn-cms.f-static.net/uploads/4393511/normal_60415ef23aad7.pdf
    • https://cdn-cms.f-static.net/uploads/4411682/normal_60527c9308252.pdf
    • https://cdn-cms.f-static.net/uploads/4417319/normal_60570c014d93b.pdf
    • https://cdn-cms.f-static.net/uploads/4404308/normal_6043947e339fd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/9b9cfac6-2fe1-4586-a2fa-3da0f1ceab15/97126175560.pdf
    • https://uploads.strikinglycdn.com/files/2c2d81b6-0b20-47d1-a553-10efc86799c4/musutubivejak.pdf
    • https://uploads.strikinglycdn.com/files/14a3171c-6199-4d43-a764-98abae371b54/when_was_phenomenal_woman_poem_written.pdf
    • http://sonopewobu.pbworks.com/w/file/fetch/144570957/sample_final_written_warning_for_absenteeism.pdf
    • http://gitixofipoxu.pbworks.com/f/zapar.pdf
    • http://funuvutidip.pbworks.com/w/file/fetch/144468633/gizix.pdf
    • https://uploads.strikinglycdn.com/files/a60edd10-4d96-48ea-a97c-100f8d5d026e/ms_sql_server_free_download.pdf
    • https://uploads.strikinglycdn.com/files/cee08100-c244-46db-8939-3e0c634f6c00/who_is_playing_landon_in_after_we_fell.pdf
    • http://bezagodo.pbworks.com/w/file/fetch/144600309/the_adventures_of_huckleberry_finn_free_download.pdf
    • https://uploads.strikinglycdn.com/files/1b689f8d-516b-427d-a937-7bf1b4857751/my_side_of_the_mountain_order.pdf
    • http://finebov.pbworks.com/w/file/fetch/144449313/99074258273.pdf
    • http://liwuvedesisu.pbworks.com/f/gumaxugobu.pdf
    • http://mumubib.pbworks.com/w/file/fetch/144413274/spot_report_format_security_guard.pdf
    • https://uploads.strikinglycdn.com/files/bec2acd2-c98b-414b-aafb-44849f50cbfd/80750662436.pdf
    • http://zuvevetub.pbworks.com/w/file/fetch/144422562/las_7_claves_del_exito_de_disney_resumen_capitulo_2.pdf
    • http://vimadutukad.pbworks.com/f/70649254461.pdf
    • http://risuxujuvu.pbworks.com/f/28625463811.pdf
    • http://bovojigu.pbworks.com/w/file/fetch/144418572/hollywood_hindi_dubbed_movies_watch_online_sites.pdf
    • http://jiboduxoguv.pbworks.com/f/guitartuna_pro_apk_2018.pdf
    • http://xovakovawup.pbworks.com/f/jodobepaxaro.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_off00014577.bin
8e4d787f799430f70905ec541c3ae8925c0a391fe51f020a25b309735ecccf5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14577 5256 bytes
font_01_sfnt_off0001574c.bin
6c69bbb36306ffd50dcfb15244cd0ecba2f40893e224ad551f62bf0494c36b4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1574C 10964 bytes
font_02_sfnt_off00017c29.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17C29 4324 bytes

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