Malicious PDF — malware analysis report

Static analysis result for SHA-256 56e6124812194a9e…

MALICIOUS

PDF

84.4 KB Created: 2021-04-09 07:50:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1716d20a12ec8175ae28a1b0fbfdbc63 SHA-1: 1dbcae0a33f39c3416072ebc6f9a5a0415713b5e SHA-256: 56e6124812194a9eef6603c47a25e0ea6f8d0827b81335db6554b1f6e8c20354
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 0.9998

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://dafemum.ru/strik?utm_term=what+are+five+characteristics+of+a+healthy+relationship PDF link annotation
    • http://zinobinipote.22web.org/compliance_monitoring_report_template.pdfIn PDF document text
    • https://bifuvabomefu.weebly.com/uploads/1/3/0/8/130814245/8f0654e2f711992.pdfIn PDF document text
    • https://cdn.sqhk.co/merojuniv/geZjfia/amazon_echo_dot_2nd_generation_review.pdfIn PDF document text
    • https://cdn.sqhk.co/kelufuro/iVhhdie/galonufusukesivawivevoze.pdfIn PDF document text
    • https://cdn.sqhk.co/wabajevebe/geTjaoc/wupixaganadaxonirowu.pdfIn PDF document text
    • https://gagakulusete.weebly.com/uploads/1/3/5/3/135326625/8410531.pdfIn PDF document text
    • https://xapinetevum.weebly.com/uploads/1/3/4/3/134330578/suduzevuma-kivoruse-wesemudevurew.pdfIn PDF document text
    • https://jofomozali.weebly.com/uploads/1/3/5/3/135387403/f96d438bc902.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://3228dc58-b2c1-4aed-ac20-03fc52793822.filesusr.com/ugd/43afbb_a1db52d99f804510b2ad50a61684a88b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/17874389398.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/navusumolazopedi.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/asmapen_comprimido_bula.pdfIn PDF document text
    • http://misopipe.rf.gd/xewuwiwuwu.pdfIn PDF document text
    • http://telimagafire.epizy.com/azbox_eurofarma_bula.pdfIn PDF document text
    • https://e6a48395-9ebc-465e-8505-c4b20d7b8e72.filesusr.com/ugd/81e12b_3f44818435ec409e872a0e1e8ae64493.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/diary_of_wimpy_kid_cast_dog_days.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/cmake_ultimate_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/autocab_driver_companion_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tamovagag/autodesk_maya_complete_tutorial.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_off00010a52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A52 5280 bytes
SHA-256: d92699c43eebdbedafc8bc6225f52e3bb7c7ace0b47acf1959777c2a5e4d966e
font_01_sfnt_off00011c5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C5C 11136 bytes
SHA-256: 580778a9293f7a66ff594a5cd7de2438a5438827b8a4064a0e0ddb82033ed63c

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