Malicious PDF — malware analysis report

Static analysis result for SHA-256 d817512cbc21fd05…

MALICIOUS

PDF

99.6 KB Created: 2021-03-22 04:14:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc630af2274b05e546a8a3b75be474e3 SHA-1: bb9c6deddfe5c8603001c55a4f15f56784edf99d SHA-256: d817512cbc21fd0504ead63f9e2c40912911ae7c792b3146043195b06eae7e1b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, suggests a lure related to downloading an assignment cover page. The presence of an external URI indicates an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9887

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://vilenefex.ru/award?keyword=nios+dled+assignment+cover+page+pdf+download
    • https://cdn-cms.f-static.net/uploads/4426549/normal_6019c6cd84a70.pdf
    • https://cdn.sqhk.co/sasibasodiwu/KJVpgjz/xalojokebovumikox.pdf
    • https://static.s123-cdn-static.com/uploads/4419827/normal_5fdef32eb5762.pdf
    • https://cdn-cms.f-static.net/uploads/4496853/normal_6039c0197a948.pdf
    • https://static.s123-cdn-static.com/uploads/4387031/normal_5fe0bb07e1cd1.pdf
    • http://jokebixa.22web.org/passport_renewal_form_south_africa.pdf
    • http://wogizejelalod.iblogger.org/to_kill_a_mockingbird_study_guide_answers_chapter_1-3.pdf
    • https://cdn.sqhk.co/nodujugebi/jgWWhih/rock_radio_free_music_player.pdf
    • https://cdn-cms.f-static.net/uploads/4366063/normal_601152dca7483.pdf
    • http://zujazufomok.iblogger.org/45014180788.pdf
    • https://cdn.sqhk.co/bokirebi/ib2ZQhi/montable_dino_racer_power_wheels_jurassic_world.pdf
    • https://cdn.sqhk.co/wedowetaso/jasjeja/gimepirovix.pdf
    • https://static.s123-cdn-static.com/uploads/4444630/normal_5ff9b542307a6.pdf
    • https://cdn-cms.f-static.net/uploads/4414357/normal_602660a6ca046.pdf
    • https://cdn-cms.f-static.net/uploads/4450625/normal_5fd15d60426fc.pdf
    • http://damodudajipofem.22web.org/66150001277.pdf
    • https://cdn-cms.f-static.net/uploads/4423145/normal_6037ba52e0bff.pdf
    • http://tugofexofuwaza.22web.org/sony_xplod_car_stereo_reset.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • http://tudifilik.rf.gd/15261374834.pdf
    • http://safinunel.epizy.com/ramakrishna_math_courses_2020_in_hyderabad.pdf
    • http://bigobawavelig.epizy.com/sword_art_online_light_novel_16.5_vietsub.pdf
    • http://vopugarebino.epizy.com/sherlock_holmes_book_titles_list.pdf
    • http://gedapewubu.epizy.com/lixasagi.pdf
    • http://bixifededas.rf.gd/nordictrack_proform_520_treadmill.pdf
    • http://vepuguda.rf.gd/excel_activesheet_protect_password.pdf
    • http://nawevuf.epizy.com/apple_iphone_5_facebook.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://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular
    • 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_off0000fb0e.bin
9bcdda906580a46113e610b68926f3f221bc90e1added02bdaaf4a97d230bab5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0E 5596 bytes
font_01_sfnt_off00010e1d.bin
40ef96da86b6123d577d475be460de15c41b9ca7393a8e650be4e9942aa3c64b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E1D 3720 bytes
font_02_sfnt_off0001197f.bin
20944ca66ae789df51be655ed27509cd8d5bb3e8ad9b5913e2ec16a24c132ffb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1197F 10868 bytes
font_03_sfnt_off00013f01.bin
3b2c3139706736b1038b27230457a6a9317fbff222bfc0d93a75f7e7dee3a68a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13F01 16076 bytes
font_04_sfnt_off000153ea.bin
32e12aac662aaf220db2d82cfb877df4fbc2b9f504a6f6906bfafa3c9dc47777		 pdf-font-stream PDF embedded font (sfnt) at offset 0x153EA 14036 bytes

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