Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf50259dfff79ddd…

MALICIOUS

PDF

70.2 KB Created: 2021-02-21 08:56:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e098f9411d261ee9a31bd91a9fbda8dd SHA-1: 5e9ab0ff3e6656a88da8b069ab7537cf39787d5c SHA-256: cf50259dfff79dddb1a4342c97b5f112c0ecd17dcf92806b151d13a745f7c0bf
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://baarspo.ru/wix?keyword=limbo+pc+emulator+apk+download+for+android PDF link annotation
    • https://pikoxujedogusu.weebly.com/uploads/1/3/4/6/134665618/sajewejasorapekena.pdfIn PDF document text
    • https://tusezewepoxir.weebly.com/uploads/1/3/4/3/134339989/xasosogawat-bagexaruwe-gefakopidomajif-gajiko.pdfIn PDF document text
    • https://gotanizanoga.weebly.com/uploads/1/3/5/3/135332446/gujemixalo_velasu.pdfIn PDF document text
    • https://mapuxotegudu.weebly.com/uploads/1/3/4/3/134356271/gubajosojak.pdfIn PDF document text
    • http://timogefubor.22web.org/70944417424.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvupalib/jbhiagg/tekoniv.pdfIn PDF document text
    • https://cdn.sqhk.co/vetelojid/hdegfie/dead_cells_wiki_runes.pdfIn PDF document text
    • https://cdn.sqhk.co/febowozefu/icFsicP/piluliv.pdfIn PDF document text
    • https://kogemopisita.weebly.com/uploads/1/3/0/7/130776015/nowija.pdfIn PDF document text
    • https://cdn.sqhk.co/kaxejelun/ehjrijR/ball_match_color_switch_ball_game_zigzag_runners.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/vavebufevodutob/cellulose_structure_and_function.pdfIn PDF document text
    • http://mapitixonemo.epizy.com/53142419675.pdfIn PDF document text
    • http://kubozivomojiva.epizy.com/56729743326.pdfIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/22814865643.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_off0000d68a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD68A 5360 bytes
SHA-256: 5574a2cafe8329d8dca1ea5cd8ace339a9ae395047ffcee0a82de4a3fd5883c1
font_01_sfnt_off0000e8c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C5 10220 bytes
SHA-256: a0f651deb9a482f356a474ac336fbbbce8d09f8fe6e5c091b6b9d4c90158bf71