Malicious PDF — malware analysis report

Static analysis result for SHA-256 61405dab21c0e6b7…

MALICIOUS

PDF

76.8 KB Created: 2021-03-19 10:29:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9229f7b0a63ef6b5cd8afd78eea68f6b SHA-1: 988d4d119f7bf840d105de380ff947e8c1529087 SHA-256: 61405dab21c0e6b7d0c80b695040759443c39dcec906fd9391f8c04f932f479a
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 an embedded URI pointing to 'seumenha.ru', which is likely used to redirect the user to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit users through a malicious link.

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://seumenha.ru/strik?utm_term=joey+pigza+swallowed+the+key+pdf
    • http://thestablestl.com/dezogugesuledos5ylgc.pdf
    • http://mavito.online/8939386084wov1a.pdf
    • https://cdn.sqhk.co/bapisolel/aghV62f/sugogatudil.pdf
    • http://bunnygummy.ru/how_to_increase_5_inch_height_in_3_months0fwhr.pdf
    • https://baveretam.weebly.com/uploads/1/3/5/3/135314503/degemujoresewa_juvuvarafezij_rejolusirupux.pdf
    • https://cdn.sqhk.co/sekijebasazi/3gfjitj/world_bowling_championship_2019.pdf
    • http://form-lnstagramcopyrightservices.com/fapefakijofadabycovd.pdf
    • https://sekilulijafos.weebly.com/uploads/1/3/1/4/131438177/69017c0a972fad1.pdf
    • http://center-san.ru/masotokakertlmda.pdf
    • http://trenketo.buzz/dlink_dir_825_password_change3se8i.pdf
    • https://sunarikibuniteg.weebly.com/uploads/1/3/1/3/131381519/tudojife_fumaroges.pdf
    • https://cdn.sqhk.co/livukigelo/dTtBVE9/13121895614.pdf
    • http://help-violation.com/41979777782ki9ey.pdf
    • https://cdn.sqhk.co/zogowefu/j3I41dD/donkey_sound_mp3_free_download.pdf
    • http://keto-s1.com/how_to_clean_your_rv_furnaceksagj.pdf
    • http://prodson.space/worksheet_review_trig._identities_basicpvg0k.pdf
    • http://straponartist.com/controller_gamesir_t1d_pentru_dji_tello0sy2a.pdf
    • http://stonersfranchise.com/24986624314rjxbi.pdf
    • https://cdn.sqhk.co/gewewoturila/ufvsgfv/avast_secure_vpn_license_file_free.pdf
    • http://devgame.design/getojaveferuzuxajatuwi0mik6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f7adcd53-bc6b-4aac-aaca-5be8e31e5629/suliwexuwidevudewijovepin.pdf
    • https://uploads.strikinglycdn.com/files/c424ae88-c962-471d-96f6-4dcc0c5d730f/94182957492.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_off0000ec6c.bin
0827f233cbaef53e7b7df3f147074d57695b95f4da0829c1799984ca5965c7f2
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6C 5504 bytes
font_01_sfnt_off0000ff4a.bin
93cb817bc89c70dcf29db4689abc8c8514829de3442e4560823a0a37b9a4caa9
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4A 10852 bytes