Malicious PDF — malware analysis report

Static analysis result for SHA-256 699845f8c7517a0d…

MALICIOUS

PDF

73.7 KB Created: 2021-03-01 22:44:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 491c39ca3624b7dc6f005e51f43c2e1f SHA-1: d14062c3254cd618dc6c9f083809f4a8f61f0567 SHA-256: 699845f8c7517a0d8c638f863e11480f5ae87b1381f33ac3d007eb85de3b7704
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to resetting a Fujitsu air conditioner remote control, which is a common tactic for phishing or malware distribution. It embeds a URL pointing to 'kuzutuzo.ru', likely a malicious domain designed to host a phishing page or download a second-stage payload. The ML classifier and ClamAV detection strongly indicate malicious intent.

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://kuzutuzo.ru/aws?utm_term=how+to+reset+fujitsu+air+conditioner+remote+control
    • http://dulexip.22web.org/damidizetidomimof.pdf
    • http://cooldomen.space/nenizk1xj0.pdf
    • http://f13x.xyz/jazuflx1iy.pdf
    • http://dixurujisefumet.22web.org/tere_chumme_me_song_320kbps.pdf
    • https://static.s123-cdn-static.com/uploads/4481067/normal_600214bdaeb3a.pdf
    • http://newowoliso.iblogger.org/ibps_guide_editorial_september_2018.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://duzoxugulof.rf.gd/dotab.pdf
    • http://zevomes.rf.gd/75949922423.pdf
    • https://s3.amazonaws.com/vatosolikijike/15092299274.pdf
    • https://s3.amazonaws.com/tamobalasu/sumuvefigevofevozupitusom.pdf
    • http://kijenor.epizy.com/duplicate_aadhar_card_print.pdf
    • http://sabinozugi.epizy.com/aviary_apk_full_cracked.pdf
    • http://tesalivolanimeg.rf.gd/72257751837.pdf
    • http://lafugigolemetuk.rf.gd/minji_malayalam_album_song_ringtone.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_off0000e5be.bin
c0dcd58a2491453417d3bdba5509b1b56e114bb46f004456a57045a76c09e8c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BE 5296 bytes
font_01_sfnt_off0000f7bb.bin
8b89d7274d3d3f0566f4a51c7fd8c76418afde5f83c0a9049052eda7c2b65cf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BB 10004 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.