Malicious PDF — malware analysis report

Static analysis result for SHA-256 f26e5eaaa6f0d4d7…

MALICIOUS

PDF

67.6 KB Created: 2021-02-17 00:48:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: eb793561064bddc6ba2577312bdc73d6 SHA-1: 08e15d83120fee254d31ef3a4b1658c41dcbd082 SHA-256: f26e5eaaa6f0d4d770aeecb03ea124dbdec2127bad5bbc56047bab371cb249eb
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://maypoin.ru/wb?keyword=multiply%20using%20place%20value%20calculator PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4443576/normal_5ffe5634cfd21.pdfIn PDF document text
    • https://cdn.sqhk.co/bogijifaviba/ghfhiig/fokepolonudu.pdfIn PDF document text
    • https://zunejafeg.weebly.com/uploads/1/3/4/3/134382709/b48e8.pdfIn PDF document text
    • http://vewosanexifusip.22web.org/richard_rorty_quotes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420244/normal_60240e3948b03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384832/normal_5fea0c3578057.pdfIn PDF document text
    • https://pelabomorifij.weebly.com/uploads/1/3/4/6/134628360/xofuxatotafo-kinuli.pdfIn PDF document text
    • https://wedikeme.weebly.com/uploads/1/3/1/6/131606111/bojatub.pdfIn PDF document text
    • https://doxazefeseremef.weebly.com/uploads/1/3/4/7/134764644/kavibuliteka.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/ioLixja/sequin_simulator_games.pdfIn PDF document text
    • https://cdn.sqhk.co/xedogigiloli/hi6zge4/sabireg.pdfIn PDF document text
    • https://deremufirig.weebly.com/uploads/1/3/4/8/134854029/wegesorar-vokoj-nunafujibume-nujelitip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452169/normal_602c455ab1de4.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/tobito/amma_ammayiamma_songs.pdfIn PDF document text
    • http://loxazugexola.epizy.com/55257799383.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_off0000ccbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCBF 5268 bytes
SHA-256: 11ee152e6279a24a230d017816d2e0a273efbc99c8d58cc20300236ce42326a4
font_01_sfnt_off0000ded5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED5 10132 bytes
SHA-256: e41f59405c37936ddee6ea6eef86f15d764ba9b1f578bede6d33d0b6f6c32a10