Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6c1e8830efb64ff…

MALICIOUS

PDF

78.7 KB Created: 2021-04-15 01:32:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: b000375ec5a9fcb9cc990503f5079eb8 SHA-1: 57edb2293aaa5aa292c4fb1c49b81fbdda3ccb6d SHA-256: c6c1e8830efb64ff94f7a87050a887a292b408fb5c7a9e5ff85fe03e17c5d218
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lozipotod.ru/strik?utm_term=dolls+house+furniture+1%252F12th+scale PDF link annotation
    • https://cdn.sqhk.co/wemitupu/fKJIIZ5/draw_cars_super_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450147/normal_602df986e4f79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470537/normal_6056fe64e36e2.pdfIn PDF document text
    • https://cdn.sqhk.co/gukawaki/yikidjj/general_knowledge_quiz_games_free_download_for_mobile.pdfIn PDF document text
    • https://cdn.sqhk.co/gefimiwotux/oChjhe4/free_movies_2019_app_ps4.pdfIn PDF document text
    • http://dokaxirugik.medianewsonline.com/sujet_brevet_2020_washington.pdfIn PDF document text
    • http://bukipumil.mypressonline.com/java_beginners_download.pdfIn PDF document text
    • http://lavkavkusa.store/639710623280bex5.pdfIn PDF document text
    • http://biotringel.shop/13989386991p471.pdfIn PDF document text
    • http://leledup.mypressonline.com/43461003628.pdfIn PDF document text
    • http://toluvubub.mygamesonline.org/72516610437.pdfIn PDF document text
    • http://cheapkeys.site/mom_losing_it_meme_fisherqqblo.pdfIn PDF document text
    • http://kixiwogazu.sportsontheweb.net/wix_add_files_to_google.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419191/normal_5fc5cc014d848.pdfIn PDF document text
    • http://botefedej.sportsontheweb.net/sesizizoninure.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389582/normal_5fec9cade9e35.pdfIn PDF document text
    • http://x-bionic.shop/80812274663bfjle.pdfIn PDF document text
    • https://cdn.sqhk.co/torazanopuni/eKb1Hgh/jabuwen.pdfIn PDF document text
    • https://cdn.sqhk.co/tosobulig/fgighX8/fix_it_to_break_it_song_meaning.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/varolexexus/80412642014.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/nefapirodaxa.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/indices_bursatiles.pdfIn PDF document text
    • http://bokepomi.onlinewebshop.net/melirigujoxor.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f50f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50F 5188 bytes
SHA-256: 7341d1b27a1a4eea95615f13d6e1107adc4b6c31a0f57d0800d1b94a4588acd1
font_01_sfnt_off000106c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106C1 11204 bytes
SHA-256: 59418d51109aff4f8798f9e7888cbb5f7e88fd81330ad77dbd652a8b6e0a7207

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