Malicious PDF — malware analysis report

Static analysis result for SHA-256 46f296aed873566f…

MALICIOUS

PDF

78.4 KB Created: 2021-03-20 14:45:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13b054fd5c3675d58032a692fa17d5c8 SHA-1: d0d18768761bb3021888bdbc0494b4b763399378 SHA-256: 46f296aed873566f57b575d18e7891239df32350c5f3c29151f9510f774ceba6
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an external URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'Best gre vocab apps', indicating a social engineering attempt.

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://nipisod.ru/strik?utm_term=best+gre+vocab+apps
    • http://satogolijosefas.iblogger.org/tiruxisiwezexite.pdf
    • http://wigogaduxatinuv.iblogger.org/62279338570.pdf
    • http://keluzizizeroki.getenjoyment.net/familia_ariidae.pdf
    • https://cdn.sqhk.co/wofazexej/UwheP49/battle_simulator_knights_vs_dragons_decklist.pdf
    • http://sepoxudozixo.sportsontheweb.net/bixuvebupidikukazudoke.pdf
    • http://xukosususif.medianewsonline.com/java_8_documentation_download.pdf
    • https://cdn.sqhk.co/sururezog/gYjeTqG/age_of_empires_2_definitive_edition_kinguin.pdf
    • https://cdn.sqhk.co/voravaxa/qVd5ijX/oneplus_news_today.pdf
    • http://zozamowewideno.mypressonline.com/14026977980.pdf
    • https://cdn.sqhk.co/matijamaj/hcheShb/3686831272.pdf
    • http://xomapometafa.iblogger.org/boomerang_apk_premium.pdf
    • http://lerawutevokaj.iblogger.org/classical_conversations_memory_master_review_schedule.pdf
    • https://cdn.sqhk.co/bubiwalifeda/gLiiseR/cashier_counter_3d_model.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/zodawanuror/nesub.pdf
    • http://dijinisefiregot.rf.gd/jirajemefixugalegugaxuje.pdf
    • https://s3.amazonaws.com/nisoxow/employer_portal_user_guide.pdf
    • http://tubulufegufixo.rf.gd/litikudabub.pdf
    • https://s3.amazonaws.com/kobivimelelo/26366429457.pdf
    • https://s3.amazonaws.com/fokapikow/does_google_chrome_comes_with_adobe_flash_player_plugin_blocked.pdf
    • http://zelulujo.epizy.com/95432353837.pdf
    • https://s3.amazonaws.com/satudifin/osmosis_jones_movie_guide.pdf
    • http://xomapagovujux.atwebpages.com/bofoki.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_off0000e6b5.bin
3dc72c6e69015df2949a89a9ce5e8f27ae77a376a64032a4641cf6a0e5715dff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B5 4952 bytes
font_01_sfnt_off0000f7a3.bin
84bef488ac91329db2e48488b561600113ac19f22bfdf303c442e4d087ae2d9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A3 11364 bytes
font_02_sfnt_off00011e36.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E36 4324 bytes

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