Malicious PDF — malware analysis report

Static analysis result for SHA-256 815c360e78ac69c8…

MALICIOUS

PDF

68.4 KB Created: 2021-03-04 00:23:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 379378283035869a3701ff0c58e9d33f SHA-1: 2c37ab15ae3a58d933f0e24830ac555681951d2e SHA-256: 815c360e78ac69c898e88a284ec95596b017472e67e66ff1c5e9ebcd11cae6fd
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xajibur.ru/award?keyword=how+much+does+a+skyjack+weight PDF link annotation
    • http://tiktokhd.design/439520481412uf41.pdfIn PDF document text
    • https://satizivuzaked.weebly.com/uploads/1/3/4/3/134383512/812eff.pdfIn PDF document text
    • https://rusakubasarozu.weebly.com/uploads/1/3/4/2/134266120/gidobigonuba.pdfIn PDF document text
    • http://cosmeteca.com/crash_car_driving_2019_usafcylv.pdfIn PDF document text
    • http://laxana.ru/how_to_break_down_a_taurus_pt111_progmo0e.pdfIn PDF document text
    • http://usesucre.pro/death_in_paradise_theme_song_sheet_musicpigro.pdfIn PDF document text
    • http://gramnews.xyz/balochistan_board_date_sheet_10_class_20194uzyr.pdfIn PDF document text
    • https://nitegira.weebly.com/uploads/1/3/1/0/131071289/ef6bc9787148ba.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/bewibiwat/boss_altbalaji_episode_1.pdfIn PDF document text
    • http://mowilutom.epizy.com/7199484285.pdfIn PDF document text
    • http://dixabaxoji.epizy.com/7318315197.pdfIn PDF document text
    • http://niwaraz.epizy.com/1764835144.pdfIn PDF document text
    • http://ruriwujuvuwa.epizy.com/83381129271.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/tekitefinimetafeteja.pdfIn PDF document text
    • http://fegumipidibig.rf.gd/90074784399.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_off0000cec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC9 5520 bytes
SHA-256: b605e40fb706a62254b42b33bd3e94b0a5726ecb69379ec746990f538a2d461c
font_01_sfnt_off0000e186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE186 10316 bytes
SHA-256: c6f53e3a8db8df38b4244581b267fb8b82b0b9b4f117cf03d81594098bebab0d