Malicious PDF — malware analysis report

Static analysis result for SHA-256 e48d081cfa381a0b…

MALICIOUS

PDF

68.3 KB Created: 2021-03-10 09:11:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 1817d7e5ec931b40bccfdffe2c0570de SHA-1: faa44680d167ff748c59de85246ab6430a49aa3e SHA-256: e48d081cfa381a0b8afe663e2c018d72b9557a2b40fdded9f23cfb25fafce954
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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/123?utm_term=angadi+theru+movie++in+hd PDF link annotation
    • http://ninomut.sportsontheweb.net/worksheet_1.1_limits_and_continuity.pdfIn PDF document text
    • https://zufiwesikewini.weebly.com/uploads/1/3/3/9/133997230/a33a6e8ebf0ef2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472783/normal_6002a67808f3e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479942/normal_5fcea23492976.pdfIn PDF document text
    • http://bovewitavivebu.getenjoyment.net/why_is_nonviolent_civil_disobedience_effective.pdfIn PDF document text
    • https://cdn.sqhk.co/xorazasuno/jjugjge/sdg_e_power_outage_twitter.pdfIn PDF document text
    • https://cdn.sqhk.co/kidurukazag/fKYjhhe/32294575543.pdfIn PDF document text
    • http://bejawutipage.mywebcommunity.org/takilegozil.pdfIn PDF document text
    • https://xomugewobi.weebly.com/uploads/1/3/0/8/130814749/57062.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471688/normal_5fc5eb3c1a8d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481286/normal_5ff5d3c4bac17.pdfIn PDF document text
    • http://lixodamevurobar.mygamesonline.org/how_to_enable_console_commands_fallout_new_vegas.pdfIn PDF document text
    • https://mepubigavij.weebly.com/uploads/1/3/4/5/134599646/91d78a498a97ada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370529/normal_5fd0f71076be1.pdfIn PDF document text
    • https://cdn.sqhk.co/banibudofe/bifjbgf/jimigusagezo.pdfIn PDF document text
    • https://topalezomezo.weebly.com/uploads/1/3/4/3/134305389/4469302.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449781/normal_5fe2dead3df72.pdfIn PDF document text
    • https://libuxematofep.weebly.com/uploads/1/3/1/0/131070581/kimexiduvaxu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a39ac558-8fe8-437d-9e10-dc9402d6cb9c.filesusr.com/ugd/1ebe14_72391b2948f5413595cb77fe71f0455d.pdf?index=trueIn PDF document text
    • https://03aaa7dd-6608-466c-a68c-f41c59811c05.filesusr.com/ugd/ae15ca_fb16b08f0a8d47faa11ca79569311eed.pdf?index=trueIn 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_off0000cd59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD59 5076 bytes
SHA-256: b714b14177f04e9af46c6e395c55d6fe7d000b850783e4fe7453162542efe564
font_01_sfnt_off0000de79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE79 11000 bytes
SHA-256: 4fa84c6ae9b3876510ea8c910d768052a92a6c4dbd15d929aeaf174754c8b8f2

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