Malicious PDF — malware analysis report

Static analysis result for SHA-256 37737dbf138b9aa9…

MALICIOUS

PDF

65.4 KB Created: 2021-02-14 16:53:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6f2f1b7c49af6e3f05e095b4ac99600e SHA-1: 25157854a816dca655f870173a2ab43c08c77daf SHA-256: 37737dbf138b9aa9eddd66da102b74844afe40378e50fc558d7176008660bee5
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://jottigo.ru/123?utm_term=keurig+instruction+manual+2.0 PDF link annotation
    • https://rajarajo.weebly.com/uploads/1/3/1/3/131398110/98340de9.pdfIn PDF document text
    • https://fedubipogumuwu.weebly.com/uploads/1/3/1/3/131379546/9059650.pdfIn PDF document text
    • https://rodugetimevo.weebly.com/uploads/1/3/1/4/131407281/jebonoju-savevejux-loxitonexufogep-fipapafira.pdfIn PDF document text
    • https://cdn.sqhk.co/pegipoveridi/ySfgdRw/lenifej.pdfIn PDF document text
    • https://rokopopowatapo.weebly.com/uploads/1/3/0/9/130969888/mixaxop.pdfIn PDF document text
    • http://vukabuv.22web.org/24515226631.pdfIn PDF document text
    • https://rudazijix.weebly.com/uploads/1/3/1/4/131453676/fokevorap-lazekudurutunez-texafuwe.pdfIn PDF document text
    • https://samazixudoreput.weebly.com/uploads/1/3/2/6/132681586/sepogovivagaxusebev.pdfIn PDF document text
    • https://zefinefan.weebly.com/uploads/1/3/2/8/132816158/d2ddd9f8c0a65.pdfIn PDF document text
    • https://cdn.sqhk.co/sixepatexup/hjsibg4/sky_map_app_android_kostenlos.pdfIn PDF document text
    • https://xuguxoxarakijob.weebly.com/uploads/1/3/2/7/132740494/3c1a7505288daa.pdfIn PDF document text
    • http://xixefulazobe.22web.org/80520564249.pdfIn PDF document text
    • https://sogitinavebifi.weebly.com/uploads/1/3/5/4/135400198/wamod-dezufe-dopoxag.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/gc3hDhc/9516142982.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xizokokov.epizy.com/swiftkey_arabic_keyboard_apk.pdfIn PDF document text
    • http://babokad.epizy.com/vugevoninaxukezaf.pdfIn PDF document text
    • http://pofutujasex.rf.gd/jaripena.pdfIn PDF document text
    • http://vubapapi.epizy.com/atoms_elements_molecules_and_compounds_worksheet.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_off0000c2da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2DA 5396 bytes
SHA-256: 89a6e58357aea9f885c3df6f718aa757cf5e91042d75ca9458c6bdf4ea3af021
font_01_sfnt_off0000d52b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD52B 10400 bytes
SHA-256: f34aa9bd11a823ccaa3ad7f935cbd01adf996a9eb90f538e614550e215919ca0

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