Malicious PDF — malware analysis report

Static analysis result for SHA-256 198214c654a8e7bc…

MALICIOUS

PDF

68.4 KB Created: 2021-02-12 08:08:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8a5cf4abea9aac52042a1446d0b22ec0 SHA-1: d8ce793c1d35371e150b0d4cffc3cd5287f258f6 SHA-256: 198214c654a8e7bc3b3e66a087bc4c2518e63b92323877d9793e65966094e5ae
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/wix?keyword=connected.mcgraw-hill+chapter+5+lesson+1 PDF link annotation
    • https://kidubaviputotej.weebly.com/uploads/1/3/4/5/134520398/jutixapusisa.pdfIn PDF document text
    • http://prodit.space/87065231542kb7ex.pdfIn PDF document text
    • http://lumacy.site/93752915489vjg8g.pdfIn PDF document text
    • https://fifusikusivupe.weebly.com/uploads/1/3/4/6/134638905/denasobojewufaba.pdfIn PDF document text
    • https://xazepobuzu.weebly.com/uploads/1/3/4/5/134582826/tubivomer.pdfIn PDF document text
    • http://bigwin-1xbet.fun/camunda_bpmn_autismoq9pc1.pdfIn PDF document text
    • http://goldenframecollision.com/a_practice_run_before_performancexcpuz.pdfIn PDF document text
    • http://kittyplay.online/okc_thunder_head_coach_salary7p091.pdfIn PDF document text
    • https://fexasesari.weebly.com/uploads/1/3/1/0/131070539/3942196.pdfIn PDF document text
    • http://safagiko.iblogger.org/65473521128.pdfIn PDF document text
    • http://converstarget.ru/fuwikositotewitivevipi683d6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://waraxiv.rf.gd/ecology_lab_report_format.pdfIn PDF document text
    • http://sewasijibakel.epizy.com/rixaz.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_off0000ceab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEAB 5724 bytes
SHA-256: 34de7475aeeec3fc4cb8e5410ed38b80605dfffe6586beea0d671ed0f9d98a9a
font_01_sfnt_off0000e217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE217 10100 bytes
SHA-256: 9bd52254386d887f425f1649dbc0bb7c0bc3034e31cc8bba5745c761f03345e7