Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8464dfa295342eb…

MALICIOUS

PDF

67.9 KB Created: 2021-04-04 22:21:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f71ba161321bbca5ae4160e5919f1dab SHA-1: b1068971602da47498079099f380759340c3318a SHA-256: d8464dfa295342eb4fac2978a8abf5887d6dc90f44d27dd42652a5d7ca4566e7
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, with the primary one being 'https://maypoin.ru/award?keyword=arthrocare+quantum+2+pdf', suggesting a phishing or credential harvesting attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful websites.

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://maypoin.ru/award?keyword=arthrocare+quantum+2+pdf
    • https://cdn.sqhk.co/diwomijo/2Bhc8hj/rebel_t3i_eos_600d_manual.pdf
    • https://cdn.sqhk.co/tupulezi/iVFD0yw/kejawid.pdf
    • https://xejulanuvupif.weebly.com/uploads/1/3/2/7/132740270/fbf5c460e.pdf
    • https://rimozaruminipa.weebly.com/uploads/1/3/5/3/135391391/1ae56380a6b6733.pdf
    • https://banafazag.weebly.com/uploads/1/3/4/3/134325205/08c32a4cf.pdf
    • https://zovakilezogavi.weebly.com/uploads/1/3/1/1/131163957/fimaz.pdf
    • http://zatutajijiti.getenjoyment.net/janirolajesifiwalaj.pdf
    • http://zixaxagewan.mypressonline.com/fixed_asset_management_best_practices.pdf
    • https://cdn-cms.f-static.net/uploads/4465393/normal_601f06f5a9456.pdf
    • https://cdn.sqhk.co/bokupajokim/glJOcgf/jimet.pdf
    • http://gizigevom.mygamesonline.org/how_old_are_romeo_and_juliet_in_the_book.pdf
    • http://kunozoxutokusu.mygamesonline.org/39097031005.pdf
    • https://pezobarifad.weebly.com/uploads/1/3/5/3/135394950/pojog.pdf
    • https://cdn.sqhk.co/vobevufubito/e5XR39l/56167504292.pdf
    • https://cdn-cms.f-static.net/uploads/4489977/normal_601e72bc54b89.pdf
    • https://cdn-cms.f-static.net/uploads/4403131/normal_6062f04081b08.pdf
    • https://guvujuxedudekef.weebly.com/uploads/1/3/1/1/131164066/lusix.pdf
    • https://kebuwusatame.weebly.com/uploads/1/3/5/3/135343151/gofibirolafo.pdf
    • https://zomijozefabeten.weebly.com/uploads/1/3/4/6/134636393/2b17151bf9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zutugidod.onlinewebshop.net/nenisawokarakifu.pdf
    • http://wutejaxevewef.myartsonline.com/bd_chaurasia_handbook_of_general_anatomy_6th_edition_download.pdf
    • http://wolobugoxew.myartsonline.com/best_buy_rode_videomic_go.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccd6.bin
dd54000feeed64dd96420e01552f618051c12266cada991894cc1129b4ec4b3d
pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD6 5432 bytes
font_01_sfnt_off0000df2d.bin
2958b6f8460ae04af071d3dec7b3dbc4b0d16ff55e111e4868d7f17696cb243e
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2D 10260 bytes