Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c008813dcf77365…

MALICIOUS

PDF

105.5 KB Created: 2021-03-20 17:09:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4767f609459f4ef6e072b74811ad10a0 SHA-1: de460e262ecf0946da0b6106bc92b30280685cc0 SHA-256: 5c008813dcf7736577ba9cf69de38076ba6cec8c7ad8d2fa5225f6c2c91b0ac2
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL associated with downloading software, and a heuristic indicates the presence of a visual download button. These elements suggest the document is designed to trick the user into downloading and executing a malicious file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://botokaw.ru/wix?keyword=gamecih+apk+download+uptodown
    • http://sirunome.mypressonline.com/que_es_un_lienholder.pdf
    • http://bagururidafu.22web.org/xasatozoroj.pdf
    • https://static.s123-cdn-static.com/uploads/4404987/normal_5feed5349a9ee.pdf
    • https://cdn-cms.f-static.net/uploads/4390371/normal_60253c7f0677c.pdf
    • https://ganubidorebe.weebly.com/uploads/1/3/2/7/132740923/7845215.pdf
    • http://tafugegajotu.mygamesonline.org/vermintide_2_grimoire_disappear.pdf
    • http://fojukivijivik.medianewsonline.com/cleverpdf_para_windows.pdf
    • http://radapox.iblogger.org/sheffield_city_hall_seating_plan_restricted_view.pdf
    • http://xuwuvewisin.mypressonline.com/benefits_of_autocratic_leadership.pdf
    • http://mebovaduzi.mywebcommunity.org/dezolobagosufo.pdf
    • http://lexamopelezun.mywebcommunity.org/vezopa.pdf
    • http://topijakalez.22web.org/19715432919.pdf
    • https://binigikuvoloxog.weebly.com/uploads/1/3/5/3/135332024/kexorowux.pdf
    • https://cdn-cms.f-static.net/uploads/4394060/normal_601594b5cda36.pdf
    • http://fezufizibum.mypressonline.com/how_to_avoid_cavitation_in_pumps.pdf
    • https://jolofoni.weebly.com/uploads/1/3/4/0/134042869/9098135.pdf
    • https://penogefuf.weebly.com/uploads/1/3/2/7/132740618/xigose-jupugunafiwej.pdf
    • https://dawutika.weebly.com/uploads/1/3/1/4/131407504/mugoxez_temuresejomafe_koxageko_kaxiwalelelov.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vovakupalujum.onlinewebshop.net/fatofogikobidekojomu.pdf
    • https://uploads.strikinglycdn.com/files/ef70a2ea-10d0-457a-a9f6-e8aaaf5df8c6/29607150105.pdf
    • http://dipibezepipes.rf.gd/2008_gmc_acadia_repair_manual.pdf
    • https://uploads.strikinglycdn.com/files/fb577c3b-07f0-4bc0-96ce-95cdd12fc19b/lujowifumatonaruzepopi.pdf
    • https://uploads.strikinglycdn.com/files/7122c0b5-b142-4e39-824a-82093afa4bcf/john_deere_2650_hydraulic_pump.pdf
    • https://uploads.strikinglycdn.com/files/8d8d711d-62c3-4e53-8a43-1833b8a09e63/80385899720.pdf
    • http://xenemusexo.epizy.com/tosajovafiwi.pdf
    • http://mugomodag.atwebpages.com/lamasor.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012303.bin
2acdeb9df291b9f1d50c541d8a8592f8c6c0c4581001ea081e0579aa43dcd9f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12303 18064 bytes
font_01_sfnt_off00015c6f.bin
a632eeb3bc366c8a35060752f8b5b8cfe6ebbb731abd090e9072f10481526267		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15C6F 5224 bytes
font_02_sfnt_off00016e28.bin
9c00cf3c992dd1c2e28286cf36505133463e87fc48dd28a5234d3c4ad9d8ff0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16E28 12976 bytes

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