Malicious PDF — malware analysis report

Static analysis result for SHA-256 146991df833dc6c4…

MALICIOUS

PDF

83.1 KB Created: 2021-05-09 08:44:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82e2d58007b994180eba60e393954cbc SHA-1: b10008c97656ce208d5cbbffd2f25f12051fa3d5 SHA-256: 146991df833dc6c4da2a1492c303503f8da5a481e678ac43a9ca6845d83a4f7a
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to puppy sales, directing users to a suspicious URL. ClamAV detection and ML classification strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL is the primary indicator of compromise, suggesting the document is a spearphishing attachment designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/strik?utm_term=red+dapple+dachshund+puppies+for+sale
    • https://cdn.sqhk.co/waxipefimafa/ODfRhfG/67534423258.pdf
    • http://lnstagramcopyrighthelps.com/adverb_of_manner_worksheet_grade_6hmi1t.pdf
    • https://cdn.sqhk.co/javeduner/7ihYgdw/91200024842.pdf
    • https://cdn.sqhk.co/pibexezases/j9cgc6S/black_friday_walmart_sales_on_tvs.pdf
    • https://cdn.sqhk.co/xojugako/NjeVFhd/bubble_tea_kit_uncommon_goods.pdf
    • https://cdn.sqhk.co/nufuwijili/gcqghji/automatically_sync_icloud_photos_to_pc.pdf
    • https://cdn.sqhk.co/tomubozes/dzTAhhf/47454797919.pdf
    • http://nonly.xyz/noxedavoselenoferibufycms.pdf
    • https://cdn.sqhk.co/sarowojep/bjbgj3v/sarape.pdf
    • http://dalkomis.website/vodafone_yan_mda_apk_cark_hilesiorkeu.pdf
    • http://raisinshq.club/love_story_taylor_swift_chords_fingerstylev3tcb.pdf
    • https://cdn.sqhk.co/pekotegafod/hhFbi9O/54257926859.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/faxaxos/kavaxunisebusezureniris.pdf
    • https://s3.amazonaws.com/pozokimepe/vesomidoseladujozo.pdf
    • https://s3.amazonaws.com/xijilesuzuxo/castle_of_glass_karaoke.pdf
    • https://s3.amazonaws.com/nonabafat/how_much_is_hp_pavilion_15.pdf
    • https://s3.amazonaws.com/xukirizugukugi/lolizidasulo.pdf
    • https://s3.amazonaws.com/muxegeza/i_am_that_book_quotes.pdf
    • https://s3.amazonaws.com/jusuberu/koxekubexidozasugefit.pdf
    • https://s3.amazonaws.com/xoxaneral/odia_song_ringtone_pagalworld.pdf
    • https://s3.amazonaws.com/jazuravazaguz/tofopodilamuwonopawariral.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_off0001050f.bin
3a52469d287f169788259e48c0c206f415d14a10604690a6b8d673d739ffa764
pdf-font-stream PDF embedded font (sfnt) at offset 0x1050F 5248 bytes
font_01_sfnt_off000116e7.bin
6661bf3de1d9ae7d01cc84e8fd888f11794257af0586d4903d0c2884a382e97c
pdf-font-stream PDF embedded font (sfnt) at offset 0x116E7 11948 bytes