Malicious PDF — malware analysis report

Static analysis result for SHA-256 c12965b82531ec15…

MALICIOUS

PDF

64.3 KB Created: 2021-03-24 13:51:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 40612b2bb8ac6f650c900bda83d4dc1f SHA-1: 42f4bf03cf33c294143ddf271a5676559caaeccb SHA-256: c12965b82531ec15ab3c0404b34b42aab117307d01063f74c90e337706b5caf7
96 Risk Score

Malware Insights

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

The file is identified as malicious by a ClamAV detection and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a domain that is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to educational content, which is a common tactic for phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wix?keyword=wave+speed+word+problems+worksheet+answers PDF link annotation
    • http://manidat.sportsontheweb.net/8817718244.pdfIn PDF document text
    • http://zotoxilob.getenjoyment.net/kepimogafiwogaruf.pdfIn PDF document text
    • http://akvatehnika74.ru/babetehh091.pdfIn PDF document text
    • http://zaranes.getenjoyment.net/90048850948.pdfIn PDF document text
    • http://jifarobajis.sportsontheweb.net/how_do_i_connect_my_echo_dot_2nd_gen_to_wifi.pdfIn PDF document text
    • http://stankoff.org/gilagepujemixiz6h4v.pdfIn PDF document text
    • http://dewisazovuvoxi.mywebcommunity.org/per_la_gloria_d_adorarvi_low_voice.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/woxewiwupir/zikikudezezogalure.pdfIn PDF document text
    • http://madepadejatutof.onlinewebshop.net/jixitobowiwukidikape.pdfIn PDF document text
    • http://bobupugarini.epizy.com/bumble_bff_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/gifusejinikowimefubi.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/cheat_engine_7.pdfIn PDF document text
    • http://komorubureg.rf.gd/minewuvazimajurewironado.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/sun-lite_truck_camper_owners_manual.pdfIn PDF document text
    • http://zubiluwetij.myartsonline.com/digitech_jamman_express_power_supply.pdfIn PDF document text
    • http://gajutar.onlinewebshop.net/lifetojuzivatarolawejonup.pdfIn PDF document text
    • http://gujupikisikali.epizy.com/2018_acc_aha_guidelines_cholesterol.pdfIn PDF document text
    • http://pefafimu.rf.gd/79137416460.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/71291196607.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_off0000bf39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF39 5568 bytes
SHA-256: 52f7e13acc99f971e1796ded67da7398912dea024186d8ef0329847893c29f1b
font_01_sfnt_off0000d20e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD20E 9928 bytes
SHA-256: 69e44824b78994e71d4bd549a8d6b54c1b47efc4ee2869cfb083ca1d5b6d1587

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