Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2da263a7ee4a1f…

MALICIOUS

PDF

76.9 KB Created: 2021-05-31 15:15:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f65fce1617bfbd19d98f9f0c0c249279 SHA-1: 29138f92545cbfad2955a0848d5f17508f721ee0 SHA-256: af2da263a7ee4a1f68eb27963c1a029afe22fd7859cec8f1d393ab1a09a92291
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 0.9996

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://garglob.ru/pbw?utm_term=list+of+city+names+in+india PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4501791/normal_603ece0a24dcf.pdfIn PDF document text
    • https://belinadojo.weebly.com/uploads/1/3/1/6/131607131/sebekafuvejosofexo.pdfIn PDF document text
    • https://fakebomazeb.weebly.com/uploads/1/3/1/4/131453402/basijij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490949/normal_603c7867242b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367287/normal_5fc93251cb2f3.pdfIn PDF document text
    • https://sosojisizavawov.weebly.com/uploads/1/3/1/4/131454692/636ba72f6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384483/normal_5fdb1d8538d89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370285/normal_606e188d1488a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365627/normal_60351916bc775.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419644/normal_5fceb49ade23d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366406/normal_5fe0b61c1c11e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444647/normal_5ffe031813b6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500438/normal_606d568e5d111.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386597/normal_604cc517a9685.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/f44e4aa3-c94c-4293-b776-621edd57c004/phanteks_enthoo_luxe_2_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8c5136b-feb6-43a6-aa54-53462b8389d9/ver_la_pelicula_de_crepusculo_twilight_completa_en_espaol_latino_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a4ec627-7d35-4930-ae5d-c3524361d62b/82533484530.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74c9dea6-8c6d-4d29-abe1-38c2d31b935d/zosaxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5eb0969e-e41a-497a-99a2-abe9c7bbbaf4/39226971321.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc56dec5-da2d-4093-9a16-fbe7a82d3c2d/kuzukapebulalosowamuwexes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/249bcd33-765c-4b17-9bd4-e3617bd66894/what_is_the_role_of_public_relations.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_off0000e37f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE37F 4868 bytes
SHA-256: 6b5c97152c463b6514b0fd25cff6ed63201cc7213c2b5d684514291a929af3c3
font_01_sfnt_off0000f3f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F9 10696 bytes
SHA-256: 48e69ea062be29d1b9b2d33fb11f8f679527af26a6d275af468b1b75e8eb1d72
font_02_sfnt_off0001181b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1181B 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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