Malicious PDF — malware analysis report

Static analysis result for SHA-256 19b1fa74265f8d78…

MALICIOUS

PDF

74.9 KB Created: 2021-03-18 09:58:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 753d0ee6b9b1889fc87bde69ae98bbce SHA-1: e7d9822dfffed21db098bb3762209029a8dfdabe SHA-256: 19b1fa74265f8d78bf9d17a197943008ad3ad1bdd97e8e86187a5ecd17261248
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with a primary one pointing to 'lozipotod.ru', likely serving as a lure to a malicious site. The document body, though heavily obfuscated, suggests a conversion theme, which is a common pretext for phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=5+1%252F2+pulgadas+a+milimetros PDF link annotation
    • http://bosupena.iblogger.org/49718578103.pdfIn PDF document text
    • http://tdsevsvet.ru/hesss_law_practice_problems_answer_keycbx13.pdfIn PDF document text
    • https://cdn.sqhk.co/libavesonon/hcjjhfP/pizanagodatezapogezijor.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/79578280000zkiai.pdfIn PDF document text
    • https://cdn.sqhk.co/wubukuxivupe/AUOyijd/74896843100.pdfIn PDF document text
    • https://cdn.sqhk.co/kewesowovim/ijcibha/46875446459.pdfIn PDF document text
    • https://cdn.sqhk.co/dakuwuwuzije/eSrijig/kafivigurigigiboja.pdfIn PDF document text
    • http://nurimipo.22web.org/kyocera_fs-1118mfp_scanner_driver_windows_10.pdfIn PDF document text
    • http://veloxezidirexob.iblogger.org/gefezofex.pdfIn PDF document text
    • http://xafukuxovikovu.22web.org/architecture_portfolio_book.pdfIn PDF document text
    • https://cdn.sqhk.co/jukapaba/cS4x3ie/55420934780.pdfIn PDF document text
    • https://cdn.sqhk.co/wifilivemij/jdypePe/dream_defender_maplestory.pdfIn PDF document text
    • https://cdn.sqhk.co/sojuzafu/hayir4w/simuvukuda.pdfIn PDF document text
    • https://cdn.sqhk.co/wozokagad/ujfawkZ/company_balance_sheet_example.pdfIn PDF document text
    • http://lnstagram-copyright-supports.com/how_are_the_theories_of_plate_tectonics_and_continental_drift_relatede4tk2.pdfIn PDF document text
    • http://dhl-order.info/how_do_i_connect_my_phone_to_my_hp_deskjet_2540wa778.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://bikevobo.rf.gd/17071612686.pdfIn PDF document text
    • http://kakikokipuz.rf.gd/wanuvamebitazapawenikewo.pdfIn PDF document text
    • http://maderenefozido.rf.gd/keto_diet_for_beginners_free.pdfIn PDF document text
    • http://dojidusajotat.epizy.com/albany_georgia_weather_report.pdfIn PDF document text
    • http://metivatozu.epizy.com/fomebufofuxabagowepalu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d98b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD98B 5304 bytes
SHA-256: 8f7dfa8af7d58e3ee4dcd140b16e97649395ab228ea15638b7dc14b3217a06de
font_01_sfnt_off0000eba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA1 11184 bytes
SHA-256: ab9961d59f394c4ce0df3b7023f2a25f7e86dfb4c190d9749566c497bc414c19
font_02_sfnt_off00011055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11055 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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