Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9e0ac7908fd8d48…

MALICIOUS

PDF

79.4 KB Created: 2021-05-19 20:52:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f1649ca310320790562af72835cfd322 SHA-1: 577b92c43dacd207a1de330941c0aa879565f92b SHA-256: d9e0ac7908fd8d48bbe136f5d9372a3a75ce3e313de0dbf2a34bf1d360c6cd10
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://soxebez.ru/strik?utm_term=an+ordinary+sonic+rom+hack+unblocked PDF link annotation
    • https://siviwoxepigomuz.weebly.com/uploads/1/3/0/7/130739754/a37f2a6444.pdfIn PDF document text
    • https://digeforoxega.weebly.com/uploads/1/3/4/6/134668277/3ad99717f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404122/normal_5fe13294c991e.pdfIn PDF document text
    • https://pakefexudexabe.weebly.com/uploads/1/3/0/9/130969404/4456217.pdfIn PDF document text
    • https://duzufekiwavana.weebly.com/uploads/1/3/4/6/134609718/vojavatugosevewe.pdfIn PDF document text
    • https://devatokur.weebly.com/uploads/1/3/2/6/132683056/1181290.pdfIn PDF document text
    • https://xopapukewude.weebly.com/uploads/1/3/1/4/131408664/6490322.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485942/normal_6003272e51fa3.pdfIn PDF document text
    • https://panebelodoz.weebly.com/uploads/1/3/4/6/134619461/9570088.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494440/normal_600b5f7275442.pdfIn PDF document text
    • https://fugomunufu.weebly.com/uploads/1/3/4/5/134586131/f02467.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484609/normal_5fdeeb3e34ec9.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/wovugi/bofove.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/waxugokunomeme.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/94071271505.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/apgli_full_form_in_salary.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/fafisemenosisoba.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/91427687496.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/wildgame_innovations_shadow_camera_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/fizuwaliwapemijenenofukeg.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/85729442991.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/alternariose_de_la_pomme_de_terre.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/39965075945.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/office_365_activator_2016_free.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_off0000f82d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82D 5472 bytes
SHA-256: 09730d99bd581e832c8438c79c6fb9d094bbd47e0ea7ff3685de97f8935eb168
font_01_sfnt_off00010aa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA0 11032 bytes
SHA-256: 3a466084b0f73b7ed74ab5910827c2648ec4f42fc61eed162870e099666bb101

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