Malicious PDF — malware analysis report

Static analysis result for SHA-256 62d1dac733798e50…

MALICIOUS

PDF

74.0 KB Created: 2021-02-20 16:30:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: dbf748cfd0b2d30bc51aaf53e3908081 SHA-1: 57161432c2545c93b4d066695c1c40f30ca6c5b8 SHA-256: 62d1dac733798e501c6b5e566bcd483fe76ee401ddcf25ca3793cd261dc437b9
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/aws?utm_term=bose+universal+remote+codes+for+samsung+smart+tv In PDF document text
    • https://cdn.sqhk.co/rifarako/jjjcghj/linuvera.pdfIn PDF document text
    • http://moviesaddaa.online/water_parks_in_paris_franceh2c4w.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/cFdhjE4/motob.pdfIn PDF document text
    • http://eeeeeyyy.space/vifiwiniveliluna7mk6k.pdfIn PDF document text
    • http://ridunculus.com/us_army_combat_uniform_1980szoj05.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/jdjiicB/situdikapadidifunugumog.pdfIn PDF document text
    • http://gratoraama.space/mountaineering_pants_for_sale0m4c7.pdfIn PDF document text
    • http://wonnaturila.space/nekozogejokasibanijuxaloru858.pdfIn PDF document text
    • https://cdn.sqhk.co/letabuner/dji0Rjd/bovofabazalikifo.pdfIn PDF document text
    • http://coins24h.com/dutuko4ceu.pdfIn PDF document text
    • https://cdn.sqhk.co/mujutuzidip/32gjMgd/solar_smash_free_chromebook.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://babupit.epizy.com/11313436424.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/bor_ekom_by_mercy_chinwo_audio.pdfIn PDF document text
    • http://lojosuxotugades.epizy.com/mawijapagesawaxavafu.pdfIn PDF document text
    • http://rulakilelakeze.epizy.com/buku_aksara_sunda.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_off0000e5f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F1 5452 bytes
SHA-256: de6147e948f7ec739555eb660a773d8f511f0d95683ee48c211e82d9eb7797e3
font_01_sfnt_off0000f86d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86D 9996 bytes
SHA-256: 0287b99d585448945f69bd422d294eb5d9f10f9b5223d9f7fe4679ffc5a4a4fd