Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebabb592fc54f70f…

MALICIOUS

PDF

71.4 KB Created: 2021-02-16 09:13:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 30a0e9295457de91010bf4eb7b9d8857 SHA-1: b2a8568e520e2fe0e835ff829d08750da689f162 SHA-256: ebabb592fc54f70ff45d467b5aefd4e10ae54f6bca67acd95d346c8f44e6a769
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, forming a link farm, and one of the primary URLs is `https://seumenha.ru/wix?keyword=pitbulls+for+sale+in+ny`. This suggests a phishing or scam attempt disguised as search results. The ClamAV detection and ML classifier further indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://seumenha.ru/wix?keyword=pitbulls+for+sale+in+ny PDF link annotation
    • https://xowimigijik.weebly.com/uploads/1/3/1/6/131637135/vexixe-xojifuduta-ligigipofum.pdfIn PDF document text
    • http://mini-camera-super.club/853889944706qti2.pdfIn PDF document text
    • http://rentline.pro/24278504800nojvp.pdfIn PDF document text
    • http://nat-fru.space/football_manager_2019_pre_game_editorca29o.pdfIn PDF document text
    • http://mowuvivof.22web.org/kingsoft_spreadsheets_2013.pdfIn PDF document text
    • https://wojanoxunoliwam.weebly.com/uploads/1/3/5/3/135394081/b398e4.pdfIn PDF document text
    • https://jepejopik.weebly.com/uploads/1/3/4/6/134610321/8828608.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/vesubodufisi/2999855118.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/88313921033.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/game_keyboard_apk_aptoide.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/10268066002.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/nanajobalofajabaja.pdfIn PDF document text
    • http://vulomalizekuvu.rf.gd/kipivapinolof.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/rains_castamere_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/xunuxirimukuniboxos.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/hardware_startup_business_plan.pdfIn PDF document text
    • http://salulasalanegox.rf.gd/fijukobugamuvapoz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ceb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB2 3240 bytes
SHA-256: 6a46a6e7bf1dd984398b028723902bba8fb0d9342adef9eaa71890c7d28ac7e5
font_01_sfnt_off0000da4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA4B 5004 bytes
SHA-256: 2cccfdec7c8af8da684ec0336df147c7c75ff9d97ad639e117c64d7366af6fb2
font_02_sfnt_off0000eb67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB67 10932 bytes
SHA-256: dcbace494ffc1840db437bc646077758c72b00721244e0f65deae081d1dc7c8c

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