Malicious PDF — malware analysis report

Static analysis result for SHA-256 854eff79ef2b1b9f…

MALICIOUS

PDF

78.0 KB Created: 2021-03-25 00:44:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 70a79c66d5f76bc53ec4ba5dbcbb2fdb SHA-1: de1aa2b972ad9f673b579b7cd00e1ea39c6b6857 SHA-256: 854eff79ef2b1b9f2a4a9368cacd42c49d6dc8c9412a817d4e45516e44b1daf8
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a website disguised as a search engine result for educational content. This is a common phishing tactic to trick users into visiting malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

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://jottigo.ru/wix?keyword=go+math+chapter+6+answer+key+grade+4 PDF link annotation
    • https://cdn.sqhk.co/gogojiranat/zrJjgxq/terupajerusekepikixe.pdfIn PDF document text
    • https://cdn.sqhk.co/zonigita/ghMihid/battleground_survival_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/jesjjbd/jinupategurefiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/benuka/febagotawaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/871d06fe-6214-473b-8664-2386acb7244d/14847409038.pdfIn PDF document text
    • http://moxurux.epizy.com/adventure_of_a_lifetime_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/eclipse_luna_c.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/how_to_rap_very_fast.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/yuddha_kanda_songs_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ceea9ae-5f4a-41b2-89b5-e4b6e53f6b7e/the_cat_in_the_hat_book_cover.pdfIn PDF document text
    • http://jafiporada.epizy.com/why_are_mens_hands_attractive_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/vetolunoxatijozexovixew.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/metodo_de_aprendizaje_visual.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/94690414530.pdfIn PDF document text
    • http://vopepeto.epizy.com/how_to_change_battery_in_kidde_fyrnetics_smoke_alarm.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/543265601.pdfIn PDF document text
    • http://tukutuxobolekub.epizy.com/gamirodigi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23bcf1ce-9abb-45d2-97c4-a24a7c8a8da0/18143224248.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0f3d03f-99e4-45fc-8ee3-9ab231d231cf/lord_of_the_flies_chapter_questions_and_answers.pdfIn PDF document text
    • http://voferumupisefag.rf.gd/music_to_my_samsung_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/90992363205.pdfIn PDF document text
    • http://xuvunemomot.epizy.com/abscesos_axilares.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF152 5988 bytes
SHA-256: 6b683dc90b3351018db23a84ab1587d48206bd8965a6ae17201b2230d45cf927
font_01_sfnt_off000105a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A6 10920 bytes
SHA-256: 4688ad4043fcd154144cbb15a4dfd8448ae30444dbb547ba791a861e0f0902ab

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