Malicious PDF — malware analysis report

Static analysis result for SHA-256 322f40a2d774138c…

MALICIOUS

PDF

78.4 KB Created: 2021-02-28 10:04:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 9753e4106546b00199180334448ad7ac SHA-1: 98709a1902906e8b0ab22908b35e3e2443679e33 SHA-256: 322f40a2d774138c11b50d87bd34d5b263a446393ef55c24a866e532143994b2
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 embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, suggests a lure related to educational content, which is a common tactic for phishing and malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://dugedepap.ru/strik?utm_term=how+to+find+initial+velocity+without+time+or+distance PDF link annotation
    • http://jasazotinalol.mygamesonline.org/6th_grade_math_fun_worksheets.pdfIn PDF document text
    • http://gamukanemafutu.mywebcommunity.org/butivakowisukalote.pdfIn PDF document text
    • http://davupopebuwiser.sportsontheweb.net/pokidem.pdfIn PDF document text
    • http://segewagukejij.iblogger.org/sogadopipa.pdfIn PDF document text
    • http://mixutadumekaje.mypressonline.com/machine_shop_math.pdfIn PDF document text
    • https://cdn.sqhk.co/gupuwiwi/P2icBx9/virus_and_bacteria_difference_in_english.pdfIn PDF document text
    • https://cdn.sqhk.co/zezegawutogu/hi1q1l8/virtual_dj_music_mixer_online.pdfIn PDF document text
    • https://cdn.sqhk.co/meradipuwiz/IlibgdF/cruise_ships_reopening.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/jikelikedamopukataridab.pdfIn PDF document text
    • http://kopogaxepaku.sportsontheweb.net/dupiromajez.pdfIn PDF document text
    • https://cdn.sqhk.co/supesuvepo/djaDPHB/it_s_full_of_sparks_apk_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sasukagisodubex.onlinewebshop.net/sopenaziroxugifomuta.pdfIn PDF document text
    • http://kunijudodo.rf.gd/historicismo_definicion.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/companion_animals_act_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/why_is_my_brother_printer_suddenly_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/wutivaz.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/gamutiwepukegujete.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/sony_20.1_megapixel_digital_camera_price_in_sri_lanka.pdfIn PDF document text
    • http://satawakerexe.atwebpages.com/xodivaxefo.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/31626191761.pdfIn PDF document text
    • http://zirutabu.myartsonline.com/watchman_nee_quotes_sit_walk_stand.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/capitalization_in_english_exercises.pdfIn PDF document text
    • http://dakekamuma.rf.gd/43406003431.pdfIn PDF document text
    • http://zuvetimimu.rf.gd/11232526975.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/app_to_free_books_on_android.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_off0000f1aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AA 5476 bytes
SHA-256: 460dd2121a0579ef0151ae611cb67f58f33ddbe3e74440698dde70cc86ddd998
font_01_sfnt_off00010440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10440 11524 bytes
SHA-256: 2412dcf5953f7ffb26a6a74daac2591fdc0ce7503686f692ec5fc9959a68bf39

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