Malicious PDF — malware analysis report

Static analysis result for SHA-256 23c39af08fde2512…

MALICIOUS

PDF

169.9 KB Created: 2020-11-14 16:12:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ab87c01112f33ed13ad73c1c28a91b32 SHA-1: 26e1926c0a1962f29b75b619f78a358a57656cd6 SHA-256: 23c39af08fde25128be855849317ac0716ecf1280a9d916ca3da7c3f5f09f069
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/strik?utm_term=frenchtown+elementary+school+ri In PDF document text
    • https://xotugakifegug.weebly.com/uploads/1/3/4/1/134131530/pexew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414339/normal_5f974c8eec227.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/xusilijidub-nakegadiv-xigiwusijiketow-zedujamo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380228/normal_5fa7d5c2283bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415946/normal_5f9a51ddb5e85.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/zewimu/minecraft_pocket_edition_11.1_apk_free_download_0.15.0.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8f00323-1274-47f2-adbf-c41068c6bff9/jupikalaketezupebuvovodim.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/wirek.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/undertale_download_zip_google_drive.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/l293d_motor_driver_shield_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/biltema_cykelvagn_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8c7f5e2-0e84-4e2b-966b-74a915f8796f/80417955500.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/winchester_speedway_wiki.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/truman_elementary_school_in_cedar_rapids_iowa.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 4

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_off00026275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26275 5188 bytes
SHA-256: ac8d1e68454e253924f4d9a3c408bdfbf575bd526615ca7e741fcc94ffe14c13
font_01_sfnt_off00027404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27404 11476 bytes
SHA-256: 2728735a59fb70b441d98258931433974d319350e0090d9bf4e886728be068a8

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