Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1d6d10c5d906fbf…

MALICIOUS

PDF

75.4 KB Created: 2021-04-06 19:20:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cebdbbf5077e74f1489c4ef08e61fc96 SHA-1: eaa408404cf641ff10c9163f88bcc459e395adc4 SHA-256: d1d6d10c5d906fbf6ea9aecce9c052650673a1f83acba36babfb1daac1f977d4
164 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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://leonvi.ru/aws?utm_term=catch+me+if+you+can+movie+free+download+english PDF link annotation
    • http://changepass.online/7285090353746nvu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376374/normal_605b7c3ab4fa7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402948/normal_5ff24e97d71a0.pdfIn PDF document text
    • http://lnstagramverifiedbadge-form.com/78059907817h8t6e.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/sagotomagin/bajumonerimeloralosow.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/gabimekoponodasuvekureko.pdfIn PDF document text
    • https://2a4c341d-9af7-4f89-b48a-1b926ad6ced7.filesusr.com/ugd/dd6616_83200666394a4fda838c87bc32708916.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/bernardo_e_bianca_filme_completo.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/all_souls_college_postdoctoral_fellowship.pdfIn PDF document text
    • https://4fbc56e1-d9a2-4996-be1d-38f9cd263936.filesusr.com/ugd/b1afee_3d6709e379b0441490b8c6569fdf858e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/acer_aspire_one_722_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/digital_multimeter_dt830b_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/agra_city_map.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/78250901608.pdfIn PDF document text
    • https://153f2bed-3501-4ec5-9468-ed1987511f6d.filesusr.com/ugd/f67134_cb6d29cfc3dc4fb1b587b7b71bb98f52.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wovugi/sony_hdr-as200v_opinie.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/pcrf_full_form_in_telecom.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/beckhoff_plc_training.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/perforated_paper_half_sheet.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE866 5596 bytes
SHA-256: fc25d525ddc3817d8599fda5e3adce7ff6870eabe20e7436e2dd39b8c527dcff
font_01_sfnt_off0000fb62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB62 10672 bytes
SHA-256: 8194386cf9f5f01e5bdcc4fb46fd3e6858d314e0f26256a32aa074cedc171de9

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