Malicious PDF — malware analysis report

Static analysis result for SHA-256 d469125b60c6482c…

MALICIOUS

PDF

81.9 KB Created: 2021-03-24 02:11:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 015aad18b6e77a87cdca945b999a2430 SHA-1: 17387410992107eb48e617f9d2e585278c58b950 SHA-256: d469125b60c6482cbd5eb7a188d867d6d9bc8e401eb95dd5254c57bca03d26d7
156 Risk Score

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 0.9991

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://kuzutuzo.ru/award?keyword=hindu+baby+girl+names+starting+with+m+pdf PDF link annotation
    • http://sayseedokg.com/80870187899ss5oe.pdfIn PDF document text
    • http://mp4.design/linetakekej4sps4.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/ansys_rigid_body_dynamics_tutorial.pdfIn PDF document text
    • http://bomepufibawil.scienceontheweb.net/leave_letter_format_in_english_for_school_teacher.pdfIn PDF document text
    • https://cdn.sqhk.co/zoluxoni/igEhfJr/tegowusulopavo.pdfIn PDF document text
    • http://creditreportfast.info/rusawedotazidabe3zfpk.pdfIn PDF document text
    • http://livecopyrightverification.com/zewatanafipurfwnyh.pdfIn PDF document text
    • https://cdn.sqhk.co/woselukafo/ib4LaVJ/jujasejavuva.pdfIn PDF document text
    • http://drnextact.xyz/86344708703iffxs.pdfIn PDF document text
    • https://cdn.sqhk.co/molipigi/hjagd92/2742159553.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://s3.amazonaws.com/kovilowab/30244656719.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/jezenefikovuges.pdfIn PDF document text
    • https://a7193630-a032-4ee2-b136-33837135b76a.filesusr.com/ugd/fac845_8daed3674f704913b5767038d65fe47d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mizeteb/aws_devops_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/canon_powershot_sx710_hs_prezzo.pdfIn PDF document text
    • http://fazaburifug.myartsonline.com/angular_8_tutorial_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/ziruzowuvenikipalunojek.pdfIn PDF document text
    • https://92ddf5cc-4ce7-4caf-b117-8241c553a727.filesusr.com/ugd/42bae0_885237b5d71d4e3896f333d783446200.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/sepapadusukorokemus.pdfIn PDF document text
    • https://6d251753-49d0-4f5b-a278-10ed1cacc9d0.filesusr.com/ugd/5c139a_8ab313f97f2246f9a31e4c6e698eb63a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/bixar.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/marekedidijosesabug.pdfIn PDF document text
    • https://74df6fe0-557b-4e47-8461-f2df536053d0.filesusr.com/ugd/4dcf4e_e8220d6452d24a20a014d20025c0af70.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF473 5520 bytes
SHA-256: 036691830368d2ada45ad8124139218d7d34b62e1bb512e2628e5e90807cd3ac
font_01_sfnt_off0001070f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070F 10648 bytes
SHA-256: 5bab039ded061cc76b711099853039f68959522e1c8442da6601b6d7785440f9
font_02_sfnt_off00012b85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B85 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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