Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c6b3da0a6cdca29…

MALICIOUS

PDF

71.5 KB Created: 2021-02-24 20:41:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5e10ec0ca8f00ed034a69f4667fb05d4 SHA-1: 0408daf57197e886d97b21d9fea8d8d20ee3eade SHA-256: 0c6b3da0a6cdca29ea2b7e30bd63737eab061d75d346197ae287822734c882b4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/123?utm_term=irregular+verbs+examples+50+sentences PDF link annotation
    • http://usene.xyz/7156626556162om4.pdfIn PDF document text
    • https://revafabeku.weebly.com/uploads/1/3/4/7/134708131/39137152928d.pdfIn PDF document text
    • http://haifaiv.ru/toca_boca_life_hackswe8ux.pdfIn PDF document text
    • https://cdn.sqhk.co/gozolijitow/NgfSMvb/volixumotikut.pdfIn PDF document text
    • https://gojijaxokan.weebly.com/uploads/1/3/0/7/130739343/lowebozosasubegi.pdfIn PDF document text
    • https://xizulorojude.weebly.com/uploads/1/3/5/3/135391297/vilezafuziz.pdfIn PDF document text
    • https://kominalekawer.weebly.com/uploads/1/3/1/6/131636772/xepesunata.pdfIn PDF document text
    • https://cdn.sqhk.co/xapawavuma/YgcziaW/get_free_gems_monster_legends_no_survey.pdfIn PDF document text
    • http://nigavereke.mygamesonline.org/45767777733.pdfIn PDF document text
    • http://mebets.xyz/13250103109n72jh.pdfIn PDF document text
    • https://cdn.sqhk.co/takodabu/djdjdKQ/75041747796.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://luwatejanif.epizy.com/sql_database_tutorial.pdfIn PDF document text
    • http://salilizuvozel.rf.gd/vavituzozabofi.pdfIn PDF document text
    • http://webexewidulub.epizy.com/68611503134.pdfIn PDF document text
    • http://junenizexi.epizy.com/size_bed_sheets_dimensions.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_off0000d812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD812 5724 bytes
SHA-256: df201a516badba47656c6ce094d7c95f43494b803e138c88e268198f523ed093
font_01_sfnt_off0000eb86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB86 11236 bytes
SHA-256: 577d2ce05beed4cffb3d14a3306b7d535d6b105012c2f9151d441aa191d4c158