Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b067962059da8b7…

MALICIOUS

PDF

69.1 KB Created: 2021-03-01 17:42:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7dd70600dc011197514af4d99a2e14c5 SHA-1: d1639de75e42f0fc44bf6defd0a92eb70e2c7982 SHA-256: 5b067962059da8b74f08d9772ffdebc901795d9e863db45ce3538b3a5c61cf83
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://druttle.ru/award?keyword=how+long+is+cdcr+academy PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4407983/normal_5ffbd471dc3e5.pdfIn PDF document text
    • https://cdn.sqhk.co/zenegiwowi/bFseFFe/78879816491.pdfIn PDF document text
    • http://rexonina.medianewsonline.com/gegodibigetirorudi.pdfIn PDF document text
    • https://cdn.sqhk.co/banamasuvaj/Bhf8Qgc/open_water_power_boat_racing.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinirumawe/gG3jbap/download_game_spongebob_moves_in_mod_apk.pdfIn PDF document text
    • https://wonulabanasilod.weebly.com/uploads/1/3/1/4/131482851/b7b0cd2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379241/normal_5fdc411c2032f.pdfIn PDF document text
    • https://xigologilajuveb.weebly.com/uploads/1/3/4/6/134672854/zunezisa_fodozibinefi_waguxisos_lolavamitufu.pdfIn PDF document text
    • https://cdn.sqhk.co/vilonunufuk/0gijgjj/34691492462.pdfIn PDF document text
    • https://zijoganidilo.weebly.com/uploads/1/3/1/8/131856317/tenegus.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/pusori/cool_wallpapers_for_android_free.pdfIn PDF document text
    • http://diwavubodinaroj.myartsonline.com/hpi_savage_x_4.6_body.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/articles_of_confederation_weaknesses_political_cartoon.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/does_dell_optiplex_790_have_hdmi.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_off0000d27a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD27A 5416 bytes
SHA-256: d35ba8876878b35f27666ec9c2532e34a1a651e67547f2cc0735b2fac4ed2449
font_01_sfnt_off0000e4e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E6 10308 bytes
SHA-256: 6211df4a181d1f1b456103015af3175f24e99e56c9922cb3f3aac70bf167203f