Malicious PDF — malware analysis report

Static analysis result for SHA-256 62f26d3816a28e05…

MALICIOUS

PDF

73.2 KB Created: 2021-02-28 08:24:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d20727fb35123e185bf021e9e1ee43db SHA-1: bc3c9d6402cda1035d2a030e13de94f2636ee2af SHA-256: 62f26d3816a28e05ac9c634364c5260391a1230b5e1c9d927ec93ee51472f1fc
126 Risk Score

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://jacksth.ru/award?keyword=how+to+get+rid+of+water+fleas+in+shrimp+tank PDF link annotation
    • https://xixasoxi.weebly.com/uploads/1/3/5/3/135324484/66f9645133226.pdfIn PDF document text
    • https://xiramulume.weebly.com/uploads/1/3/2/6/132682542/6770131.pdfIn PDF document text
    • http://kivudutamazawan.22web.org/itsfoss_guide_install_linux_mint.pdfIn PDF document text
    • https://kowagazobavov.weebly.com/uploads/1/3/0/8/130874359/6532940.pdfIn PDF document text
    • https://xuvurabog.weebly.com/uploads/1/3/2/6/132696285/didisumik_bajetasamexu.pdfIn PDF document text
    • https://cdn.sqhk.co/jerivudofin/4pSvhaB/gilexij.pdfIn PDF document text
    • https://cdn.sqhk.co/naxupowu/X8Yiaid/filowawewozitorogar.pdfIn PDF document text
    • https://cdn.sqhk.co/fipufose/hiev7ih/linear_function_formula_calculator.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/wegugus/39303099566.pdfIn PDF document text
    • http://nosikugabuvisal.epizy.com/niall_horan_flicker_full_album.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/suvasisijego.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/73646158560.pdfIn PDF document text
    • http://defafezo.epizy.com/idsa_guidelines_antibiotic_prophylaxis.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_off0000e2ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EC 5572 bytes
SHA-256: 4e035cb88aaca6ba96f57367faaf62d62d01a8a1cb1e3c29f36a3bf75a106c56
font_01_sfnt_off0000f5cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5CB 9916 bytes
SHA-256: 4dd9eff9b7d3aed260f64186df98603c3e3d53fbb4996d53b76cac9541ea63e4