Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa11f1105eb23d14…

MALICIOUS

PDF

72.1 KB Created: 2021-02-09 18:02:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 15f362d24409c56803ff275c4e78b944 SHA-1: f21bf2be09b5dbf3b2c1f910a3bcef478d2c35b1 SHA-256: aa11f1105eb23d1490c33cf02390f412410bf0f4569a8d06f399ba1bae485a44
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/wb?keyword=samsung%20note%209%20android%20pie%20update PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4463002/normal_600f12be3aa84.pdfIn PDF document text
    • http://serviceforyou.site/67232080953dont4.pdfIn PDF document text
    • http://italylife.pro/zoviv20bg1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413567/normal_60072bc1d8e47.pdfIn PDF document text
    • http://bcpzonasegur4viabcp.com/la_vie_dun_simplej5we2.pdfIn PDF document text
    • http://operationhomeplate.com/pure_flix_not_working_on_rokuzmthl.pdfIn PDF document text
    • http://temppicture.xyz/faxudaxobiwefezabia5sue.pdfIn PDF document text
    • https://magudutetu.weebly.com/uploads/1/3/1/4/131437318/basofelakak_fojojuwati_vodeje_majenokogadef.pdfIn PDF document text
    • https://xuvelufuxilo.weebly.com/uploads/1/3/5/3/135387868/diwureku-kokewepaboluk-xatagudisok-werujaw.pdfIn PDF document text
    • https://xawawamofolapus.weebly.com/uploads/1/3/1/4/131436997/7255854.pdfIn PDF document text
    • https://zewijevatijafat.weebly.com/uploads/1/3/4/2/134265582/b582608.pdfIn PDF document text
    • https://newakikijako.weebly.com/uploads/1/3/4/3/134351088/7445924.pdfIn PDF document text
    • https://zabidikigez.weebly.com/uploads/1/3/4/5/134594795/vavajavodikadom-peloxa.pdfIn PDF document text
    • https://pudisemibupar.weebly.com/uploads/1/3/4/0/134096773/9012403.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489988/normal_6000810a520e9.pdfIn PDF document text
    • https://kadogejajufa.weebly.com/uploads/1/3/4/7/134717900/fuzedi.pdfIn PDF document text
    • https://xinelonaveguv.weebly.com/uploads/1/3/4/6/134606197/acd6c77fe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475406/normal_5fdf2f1e5c59e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dc8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC8D 5508 bytes
SHA-256: f9f2ee11ab4690ffddc962efb3db996fa10118dce311f17bf334a5f97d1527e0
font_01_sfnt_off0000ef24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF24 10716 bytes
SHA-256: 07fc670a084a8a175f7880cf430c0c759746ebc2a4a4bed830093534131d0f66

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