Malicious PDF — malware analysis report

Static analysis result for SHA-256 2747daedba870f2b…

MALICIOUS

PDF

83.8 KB Created: 2021-03-18 04:08:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2f93629c8fe18b35ea9068767bfcc46 SHA-1: 857ad38a3253fdb48648f1f9c8a9b4546b51f950 SHA-256: 2747daedba870f2b09e9892272e284d35ae5cc715f0eb0a0fa969f8614a241b1
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier 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 the user to a phishing site. The document body, though heavily corrupted, suggests a lure related to a 'couch to 5k program pdf'. No scripts were extracted, but the presence of external URIs and the malware classification strongly indicate a phishing or credential harvesting attempt.

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://lozipotod.ru/award?keyword=couch+to+5k+program+pdf
    • https://rulewosiziruzo.weebly.com/uploads/1/3/0/7/130739522/budojaxifofozu_zonupezimogi_tulugigetiwisa_posapima.pdf
    • http://duxinivodozular.mywebcommunity.org/13966051216.pdf
    • http://tifoxikutawe.sportsontheweb.net/95978956462.pdf
    • http://reactivascotia2020.com/chess_for_dummies_4th_edition_free_downloadlxvet.pdf
    • https://lapawiniposa.weebly.com/uploads/1/3/5/3/135323982/poxefamemerolin-fozorifig.pdf
    • https://mosovokiz.weebly.com/uploads/1/3/4/3/134333023/6186364.pdf
    • https://cdn-cms.f-static.net/uploads/4465006/normal_600dd20087cb9.pdf
    • http://dotekebenutedex.scienceontheweb.net/convert_to_html_using_apache_poi.pdf
    • http://marojuburegorad.22web.org/quadratic_equations_worksheet_grade_9.pdf
    • https://static.s123-cdn-static.com/uploads/4448750/normal_5ffb858d5cfab.pdf
    • https://static.s123-cdn-static.com/uploads/4365642/normal_5fe2d540848f8.pdf
    • http://topchambre.xyz/anyway_you_can_annette_bosworthaaf13.pdf
    • http://kobazugipodiv.medianewsonline.com/bagatelle_pour_un_massacre_celine.pdf
    • https://topuzuxet.weebly.com/uploads/1/3/0/7/130739133/6276913.pdf
    • http://pe50off.info/35001374012hjjxe.pdf
    • https://gixoxiri.weebly.com/uploads/1/3/4/7/134707295/8030985.pdf
    • https://torenamabaj.weebly.com/uploads/1/3/4/4/134486332/87a86c68b9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://xovolefewawex.atwebpages.com/31666075519.pdf
    • http://poduzaka.epizy.com/free_download_rapidex_spoken_english_book.pdf
    • http://jorujemefaf.rf.gd/avery_labels_8161_template_for_mac.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_off0000fc76.bin
6c73f9fde67f8b66f957e4d453bdccca6ae01e09c2c4009ef97145ea475fcec5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC76 5180 bytes
font_01_sfnt_off00010e1a.bin
7e4c63ad49082c00ec05e3fddc9736a1b45a1b74270ca5ff8e13b5535c0ed26d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E1A 10908 bytes
font_02_sfnt_off00013359.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13359 4324 bytes

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