Malicious PDF — malware analysis report

Static analysis result for SHA-256 789524210fd8e1e9…

MALICIOUS

PDF

86.4 KB Created: 2021-03-22 20:09:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02f1e03c5eb9383ddaec4691f236457d SHA-1: d79a74e5203832b8c6e1b21d21036ea4c5af13aa SHA-256: 789524210fd8e1e9ae882be415b3bcc6b9aa3264590d5687066c50f34ad897f2
96 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier and ClamAV as malicious. It contains numerous embedded URLs, with the primary one being zajinet.ru, disguised as a search result. The document body, though heavily obfuscated, appears to be related to the search query, suggesting a phishing or redirection attempt to a malicious site. No scripts were extracted, but the presence of multiple external URLs indicates a likely attempt to lead the user to a compromised or malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://zajinet.ru/aws?utm_term=how+to+say+new+beginning+in+hebrew
    • http://muzibatixabu.mypressonline.com/what_are_good_books_for_14_year_olds.pdf
    • https://nesamakamaxo.weebly.com/uploads/1/3/1/6/131636712/sewotug.pdf
    • https://zejofisedefumot.weebly.com/uploads/1/3/4/6/134667534/nakezuba_mutiwof_vinatinazefe_kotujitu.pdf
    • http://bejisosubonito.sportsontheweb.net/how_to_make_simple_homemade_ice_cream.pdf
    • https://zezojafoxivofed.weebly.com/uploads/1/3/4/5/134528913/7c4a02e2a73.pdf
    • https://cdn.sqhk.co/furigelo/von3ham/warband_heroes_guide.pdf
    • http://minuzin.22web.org/36873451431.pdf
    • https://zipenuwoku.weebly.com/uploads/1/3/1/0/131071258/4269739.pdf
    • https://cdn.sqhk.co/zodunoxurob/7Qmjhhh/game_maker_s_toolkit_game_jam_2019.pdf
    • https://cdn.sqhk.co/sebixodof/ifSJ6gc/remofiwijalogewakixabifi.pdf
    • http://jedilinosur.mywebcommunity.org/xafeb.pdf
    • https://sajinekud.weebly.com/uploads/1/3/5/3/135391411/dekik.pdf
    • https://cdn.sqhk.co/kamavedes/dbiZRD2/mississippi_palisades_state_park_camping_map.pdf
    • http://zadakob.22web.org/approaches_to_social_science_research.pdf
    • https://cdn.sqhk.co/jisogixij/fifunih/manly_boatshed_gig_guide.pdf
    • https://kezaguwubov.weebly.com/uploads/1/3/4/6/134632481/kixowakikijubivifem.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/dazawojob/95586164335.pdf
    • https://s3.amazonaws.com/bulalowisu/kitchenaid_professional_600_series_6-quart_stand_mixer_costco.pdf
    • http://xutevifiwopad.rf.gd/38127512898.pdf
    • http://bixozebaxikapos.atwebpages.com/examen_atomistique_smpc_corrig_s1.pdf
    • https://s3.amazonaws.com/kovilowab/how_much_to_rent_a_carpet_stretcher.pdf
    • http://kusababi.onlinewebshop.net/voiced_and_voiceless_sounds_chart.pdf
    • https://s3.amazonaws.com/tokatefozude/lasolele.pdf
    • http://jakiwokokik.epizy.com/31603801315.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_off0000fea9.bin
9becca51757040dffabcf952fed56333cd2154afa672411ab19a3ee5c5d9c83c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA9 5000 bytes
font_01_sfnt_off00010fae.bin
1bec98653409ffc2ac766cc03fcc01539403559d840629941406a5a3b418721e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FAE 13908 bytes
font_02_sfnt_off00013da7.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13DA7 4324 bytes

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