Malicious PDF — malware analysis report

Static analysis result for SHA-256 7021fd5866c65c93…

MALICIOUS

PDF

77.9 KB Created: 2021-03-19 22:42:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3dff98702d3f44afee4446f9b4ab85e SHA-1: d96a08f937b1ec581689de05aa0e6b4264f66a19 SHA-256: 7021fd5866c65c9371b76cce2a5b109d935d616b4bc1214bfdf1af56c7205492
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a suspicious domain, identified as malicious by ML classifiers and ClamAV. The document body, though heavily obfuscated, suggests a lure related to a 'keto diet plan menu pdf', indicating a phishing or scam attempt. The embedded URL is the primary indicator of malicious intent, likely leading to a further stage of attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://soxebez.ru/award?keyword=keto+diet+plan+menu+pdf
    • https://cdn-cms.f-static.net/uploads/4483075/normal_600a980b4b2ee.pdf
    • http://generalmassage.online/maiden_voyage_herbie_hancock_sheet_musica1m0f.pdf
    • https://cdn-cms.f-static.net/uploads/4413976/normal_603889aa787fc.pdf
    • https://cdn-cms.f-static.net/uploads/4503787/normal_6047f45e19c5c.pdf
    • https://kumuditev.weebly.com/uploads/1/3/2/7/132712302/suvip-wexetinokalur-metesaduvej-pebobodojumifa.pdf
    • https://cdn-cms.f-static.net/uploads/4471479/normal_60233e459ad24.pdf
    • http://pemotutafid.mywebcommunity.org/57073797840.pdf
    • https://tusemebi.weebly.com/uploads/1/3/4/3/134316443/4651497.pdf
    • https://dukinuvofipul.weebly.com/uploads/1/3/2/7/132711936/sosozu_gewuk.pdf
    • http://fewiliw.22web.org/harry_potter_book_series_uk.pdf
    • http://opt15.ru/zuripefirivuwezodasebatirsakg.pdf
    • http://majusenise.sportsontheweb.net/unity_animator_tutorial.pdf
    • http://lebojabufi.medianewsonline.com/diwiratut.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pozajuw.atwebpages.com/fijabedemetemibiwewe.pdf
    • http://negifunowulag.rf.gd/30075609970.pdf
    • http://mavusovemoritev.rf.gd/sexuxutazanewe.pdf
    • http://zolorame.rf.gd/apna_time_aayega_song_pagalworld_com.pdf
    • http://dotalikajulu.rf.gd/chords_piano_sheet_music_happy_birthday.pdf
    • http://zogosugo.onlinewebshop.net/zibigeb.pdf
    • http://pamapezule.rf.gd/vifixoz.pdf
    • http://janalax.epizy.com/ganesh_ji_bhajan_lyrics.pdf
    • http://tirinito.epizy.com/minecraft_pvp_server_map.pdf
    • http://gesovupa.epizy.com/43077275995.pdf
    • http://sonazorapabame.epizy.com/tekozifukufe.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_off0000f3ef.bin
1373118b51cc5edf485f0790d25e3b00ab11ee3cafd1e71ecfc13fad4467212f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF3EF 4884 bytes
font_01_sfnt_off00010485.bin
e6170e50e968738e2f7fc4ef20223a0eac3d6e3700061a7a75ca6f081b8fd9fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x10485 11024 bytes