Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcc4d1ed22e6f54f…

MALICIOUS

PDF

70.4 KB Created: 2021-03-28 08:41:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: f2a3092ec405661f96c38b00232e23c6 SHA-1: 25f6fefe537f117e2a8bac61d1e3ba6ef29b33a3 SHA-256: bcc4d1ed22e6f54ff31d0f110356e6304ab87a9bc32db37350c20f0826baeb09
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and heuristics indicate it is a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains text related to car valuation, which serves as a lure to encourage clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/strik?utm_term=how+much+is+a+ford+focus+2001+worth PDF link annotation
    • http://gupupokuvugal.22web.org/fezamerinakaratokig.pdfIn PDF document text
    • https://cdn.sqhk.co/pasepizut/98rhaia/6357543077.pdfIn PDF document text
    • https://cdn.sqhk.co/madibabix/KpJjbdF/bujunefositadivabolola.pdfIn PDF document text
    • http://hugertely.xyz/alamo_colleges_salary_scalea4wj6.pdfIn PDF document text
    • http://znakomstva18x.site/wildgame_innovations_feeder_battery_chargerlz19n.pdfIn PDF document text
    • https://cdn.sqhk.co/govazofaj/ElgcFfP/who_did_chris_young_s_song_drowning_for.pdfIn PDF document text
    • http://nakanilo.club/65671626127w4hyg.pdfIn PDF document text
    • http://load-bcp.com/918126717612lft7.pdfIn PDF document text
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdfIn PDF document text
    • http://shopmzm.site/cashkaro_latest_apkwr329.pdfIn PDF document text
    • https://cdn.sqhk.co/padixemugex/l7jgGia/nda_exam_syllabus_download_2019.pdfIn PDF document text
    • http://iclod.tech/what_foods_help_get_clear_skin2lehu.pdfIn PDF document text
    • http://select-get.top/26469651648xeup4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fasevirova.rf.gd/vitamix_smoothie_recipes_strawberry_banana.pdfIn PDF document text
    • http://rilenipavow.rf.gd/english_to_bangla_vocabulary_file.pdfIn PDF document text
    • http://mezubivedoxida.epizy.com/gb_whatsapp_latest_version_december_2018.pdfIn PDF document text
    • http://rasijubesu.epizy.com/google_image_search_android_apk.pdfIn PDF document text
    • http://funasuruwet.epizy.com/bat_wings_template_for_pumpkin.pdfIn PDF document text
    • http://wipezusefoxilu.rf.gd/jasalekaputodu.pdfIn PDF document text
    • http://fegizopanawu.epizy.com/afghanistan_a_military_history.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_off0000cece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCECE 5608 bytes
SHA-256: 6cffc5ec2de2a727dd1d95fb613a28e2d4f70326b468045d73bcdb40acaf5413
font_01_sfnt_off0000e1cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1CC 11908 bytes
SHA-256: ae49281fb4d21f6ff3fc8509e34a28f075e9c7252063973778328bbd70e13c3f

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