Malicious PDF — malware analysis report

Static analysis result for SHA-256 05abc895e19b1c60…

MALICIOUS

PDF

69.9 KB Created: 2021-04-03 23:32:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fda6a15690bc372941129a51242e08d2 SHA-1: ad021664850e66ed0a019fb1248e83464c0adb93 SHA-256: 05abc895e19b1c60110632acc86a9f9465919955912c711326aacca322685ff9
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, with the primary one being 'https://dafemum.ru/award?keyword=btec+level+3+applied+science+student+book+pdf', suggesting a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are commonly used for initial access via spearphishing attachments.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dafemum.ru/award?keyword=btec+level+3+applied+science+student+book+pdf
    • https://cdn.sqhk.co/vibebexez/jbfhage/90s_english_songs_mp3_download.pdf
    • https://cdn.sqhk.co/sezepemanu/Zgjmhg0/numimenovakibotojaxov.pdf
    • https://cdn.sqhk.co/vawupemowa/7s4IjiO/binonepo.pdf
    • https://cdn.sqhk.co/gokarunedod/b6ihjjX/4852864942.pdf
    • https://cdn.sqhk.co/widexerun/jdgjidW/vintage_aesthetic_wallpapers_ipad.pdf
    • https://cdn.sqhk.co/famogidoje/ncRToCm/8943965120.pdf
    • https://cdn.sqhk.co/lofakekaf/ugchdif/beach_buggy_racing_apk_mod.pdf
    • https://cdn.sqhk.co/lisakopew/dXpLGN4/95888396399.pdf
    • https://cdn.sqhk.co/tatogevi/1BgiN9N/barbeque_grill_walmart.pdf
    • https://cdn.sqhk.co/vakolitakap/midjfgg/kemixux.pdf
    • https://cdn.sqhk.co/xoresarib/CPTYieB/gulilenurozejupujawim.pdf
    • https://cdn.sqhk.co/givifevulo/gcjfNi3/pomurimedosigisenup.pdf
    • https://cdn.sqhk.co/vobevufubito/CdUXjeI/hearts_on_fire_movie_cast_2013.pdf
    • https://cdn.sqhk.co/kolokejo/jaihhcS/95723390179.pdf
    • https://cdn.sqhk.co/pigajifaw/di3jggg/rututisosepowexarovis.pdf
    • https://cdn.sqhk.co/sivojadirabe/ggW6Vjc/93580489910.pdf
    • http://warupipujamoru.sportsontheweb.net/service_marketing_articles.pdf
    • https://cdn.sqhk.co/safovokon/hbryiaZ/yummy_guide_lol.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rizivubonulej.atwebpages.com/gedonupatadezosetuvus.pdf
    • http://xabawudoxiviwe.epizy.com/linear_statistical_inference_and_its_applications_download.pdf
    • http://vodetovite.epizy.com/36355913414.pdf
    • http://beboxunedux.epizy.com/behringer_model_d_manual.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_off0000d39b.bin
3ccb8bc194ae9cb8a777d0e86b79e046e81fd4df03e8d56fb37715cc149fe844
pdf-font-stream PDF embedded font (sfnt) at offset 0xD39B 5528 bytes
font_01_sfnt_off0000e685.bin
240d0f8d804c184f710de88db349ca531f48a2fe04a67a9a76e75c95225e11e3
pdf-font-stream PDF embedded font (sfnt) at offset 0xE685 10360 bytes