Malicious PDF — malware analysis report

Static analysis result for SHA-256 12f618a22783ba0f…

MALICIOUS

PDF

78.1 KB Created: 2021-03-09 11:53:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67d137ff6a47c581d8b162ead053d5da SHA-1: e1b405a577c2802c33a0f05c709472777fe4a6f8 SHA-256: 12f618a22783ba0ffc2df3bd22e506c7beebe8a5c43d10331d194e6e699daa64
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL that leads to a suspicious domain, likely intended for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to a 'baptism certificate template'. No scripts were extracted, but the presence of an external URI points to a common phishing tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/123?utm_term=pentecostal+baptism+certificate+template
    • http://juvivufokif.22web.org/fazozidunugafu.pdf
    • http://wuvudazesog.22web.org/what_type_of_charger_does_a_samsung_a10e_use.pdf
    • http://kewisanoxiv.66ghz.com/acute_pancreatitis_ppt.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fotojipifuzitul/79158765235.pdf
    • https://uploads.strikinglycdn.com/files/886135f2-857c-4192-b2ea-5f776179eea5/labitete.pdf
    • http://fanutebuxus.rf.gd/murisivuvosoxegolam.pdf
    • https://s3.amazonaws.com/gupojakami/karl_jenkins_benedictus_sheet_music.pdf
    • https://s3.amazonaws.com/zagapaxa/niv_study_bible_for_android.pdf
    • http://diwuzenebixo.epizy.com/37241539468.pdf
    • http://watijosanowo.epizy.com/kasuwiv.pdf
    • https://s3.amazonaws.com/vavapekadoliti/jkbose_11th_class_date_sheet_2019_kashmir.pdf
    • https://s3.amazonaws.com/zetubakuz/castor_informatique_rsultats_2018.pdf
    • http://xidozex.epizy.com/rogavoletegelete.pdf
    • https://s3.amazonaws.com/regufojalojaza/a_level_physics_syllabus_zimsec.pdf
    • http://dawubiri.rf.gd/jagigizikiwijokezukokuvo.pdf
    • https://uploads.strikinglycdn.com/files/235766f3-8db9-475c-8fc1-e90e15034df5/cat_in_the_hat_cast_fish.pdf
    • https://s3.amazonaws.com/sajezife/top_skins_minecraft.pdf
    • http://xamewesaz.rf.gd/dj_wala_dance_video_song.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f324.bin
4c3f1399da2b6b806bef9dbd341243ceb5be9c726f6050ea450d98785a764399		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF324 5300 bytes
font_01_sfnt_off00010515.bin
93c831535876a26e8ecaa99a5120d5eca5c10dc96981a3ea3427f09291cdf1fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10515 10692 bytes

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