Malicious PDF — malware analysis report

Static analysis result for SHA-256 320bd70afb65a42e…

MALICIOUS

PDF

65.2 KB Created: 2021-02-20 00:12:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9ca119a342f60a1f30c8df10a0451956 SHA-1: 691549ba7bc8f2476f945b32bd21ebd77f0771d9 SHA-256: 320bd70afb65a42e5d7e2b8c7e218965c87dc6c761c17b0c46f6b951e0788dcd
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/aws?utm_term=dork+diaries+book+15 PDF link annotation
    • https://cdn.sqhk.co/kozuvurop/gggBjjP/38986385575.pdfIn PDF document text
    • https://cdn.sqhk.co/jalosemuv/jhbiips/51486937372.pdfIn PDF document text
    • https://cdn.sqhk.co/riketumes/I5ibjbV/34949061389.pdfIn PDF document text
    • http://mogoxopedutisaw.iblogger.org/easter_addition_and_subtraction_worksheets_for_kindergarten.pdfIn PDF document text
    • https://pepizowa.weebly.com/uploads/1/3/2/7/132711999/4540229.pdfIn PDF document text
    • https://cdn.sqhk.co/xupumekejaxa/ig3idgd/cosmos_flower_images_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/lipetebo/fjfghgh/cheap_street_basketball_hoops_for_pools.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxumududu/eghhiSc/is_the_saying_like_father_like_son_true.pdfIn PDF document text
    • https://cdn.sqhk.co/gipekoma/VjdicJx/80538598786.pdfIn PDF document text
    • https://dewazolasimuf.weebly.com/uploads/1/3/1/4/131453174/dusobemifoxuded.pdfIn PDF document text
    • http://zazonowipudu.66ghz.com/deadpool_2_movie_trailer_song.pdfIn PDF document text
    • https://mefiwoteta.weebly.com/uploads/1/3/5/9/135956645/serugumobif_gonixikafelobed.pdfIn PDF document text
    • http://xepivutede.22web.org/70669767666.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410016/normal_5ff7aa4824d47.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://reratosagozi.rf.gd/crescent_lake_mn_fishing_report.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_off0000c341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC341 5168 bytes
SHA-256: ff78fcbb5ae78e748a129a64ea64cd9cce125dd84821119afe589e37ecd07db4
font_01_sfnt_off0000d4ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4EA 10380 bytes
SHA-256: e2184c3bab31e0389a73283366cdfae46e2f44f3920c5e1dc8f91fe58a65a545