Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c209c9c51ef89d9…

MALICIOUS

PDF

109.5 KB Created: 2021-03-27 15:50:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d821dc2c01d1c05c9102890b0d67b351 SHA-1: 619964a42ee10cf8000550ba6187837e3d2e8348 SHA-256: 4c209c9c51ef89d900b650865898251a8f198c4fb47a0451cd7adc4c83c67cc1
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, disguised as a game guide. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is the primary indicator of a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/wix?keyword=dokkan+battle+guide+2020
    • http://copyrighthelpbusiness.net/46880553736qheti.pdf
    • http://gudegop.iblogger.org/lodge_cast_iron_recipes_pork_chops.pdf
    • http://xugafigipi.22web.org/innova_3020_obd2_code_reader.pdf
    • https://cdn.sqhk.co/fosuzonarefi/hdjaQja/aggregate_crushing_value_lab_report.pdf
    • http://copyrightshelpcenter.com/riromivikagowoeqol7.pdf
    • http://italysummer.fun/can_dogs_eat_clementine2c2g5.pdf
    • http://igme.site/rovomatafanuxisibaro2ewkr.pdf
    • https://sejiganabukuja.weebly.com/uploads/1/3/4/5/134585043/05bf5f1.pdf
    • https://cdn.sqhk.co/tuxonewebuke/e7jgjid/star_wars_dogfight_game_online.pdf
    • http://jolidulikan.scienceontheweb.net/wepitixowutomo.pdf
    • http://sodalabs.club/what_to_do_at_lilycove_city_emeraldkf9uw.pdf
    • https://voxaxaloxedifuz.weebly.com/uploads/1/3/5/3/135399296/e00f641060b.pdf
    • https://cdn.sqhk.co/nikofilexi/gh5uP8i/mod_maker_for_minecraft_pe_apk.pdf
    • https://cdn.sqhk.co/xonepogafix/h5iehjd/87527153289.pdf
    • http://xawamiwupajev.mygamesonline.org/piridatomigugaturojun.pdf
    • https://segitosul.weebly.com/uploads/1/3/4/8/134886040/2448697.pdf
    • https://cdn.sqhk.co/kowaziwaso/Xuchihj/11296403440.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://dojajenubiti.epizy.com/kelosimopuz.pdf
    • http://pekowob.onlinewebshop.net/history_of_axum_obelisk.pdf
    • http://xaduneraxoden.rf.gd/rabironemabonomex.pdf
    • http://gixejemazob.myartsonline.com/if_third_conditional_exercises.pdf
    • http://tumofif.rf.gd/87957815776.pdf
    • http://nujebij.onlinewebshop.net/83147146870.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_off00013a3c.bin
6bd528182e3490639a47a2fbcc37b14d2cd64313e391d1d185e1b27809ca7874		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A3C 5076 bytes
font_01_sfnt_off00014b8e.bin
6f9449fe1dfe9ed76daad4635b9775309907d88ec3669935817a7269b3df9566		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14B8E 4568 bytes
font_02_sfnt_off000158a6.bin
8cf3b7653d1e95a6e1e25b372c9b74d9bd63d09379aae52d87b201cc3da3633c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x158A6 13140 bytes
font_03_sfnt_off0001844e.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1844E 16204 bytes
font_04_sfnt_off0001997c.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1997C 4324 bytes

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