Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6c4c5334ba02c28…

MALICIOUS

PDF

78.9 KB Created: 2021-04-11 20:13:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: fba569fa868274fc19f518d064e97783 SHA-1: 109235ef7b019d758189f6c56aef2d905f8a6abe SHA-256: c6c4c5334ba02c2832ac19cdb458be69795855eb1828a02cb0b8a6ead575b79e
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 0.9995

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://seumenha.ru/strik?utm_term=trend+trading+for+dummies+free+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4502493/normal_5ffae64c02313.pdfIn PDF document text
    • http://pogofefopi.22web.org/bosch_ebike_controller_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479240/normal_602147b367a10.pdfIn PDF document text
    • http://twobigs.space/zutiromadazouqpax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475997/normal_5fff666dd1c63.pdfIn PDF document text
    • http://najapizarut.22web.org/nalibasawenilexin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366031/normal_5fcdd50814542.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375514/normal_60246291ecd23.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402956/normal_5fe13561765ea.pdfIn PDF document text
    • http://itfamily.info/lagesogiforodpr7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444874/normal_5fcf69df302a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367313/normal_5fc69d8cb6c59.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://ee6bc897-aa08-459d-b6e6-b1b1d69fcba1.filesusr.com/ugd/7ba596_ed814c0a2dd14f4981c3a47fa96ea368.pdf?index=trueIn PDF document text
    • https://8fa10226-37c2-454d-bd65-ced70ecbf0c4.filesusr.com/ugd/c34aa9_4e4001a9ebc04cfe8aea5d3bff760a64.pdf?index=trueIn PDF document text
    • https://8d59741e-369e-44be-b01e-8fbcb09d2d01.filesusr.com/ugd/7cefa9_ac86e16481ad4076953caad866253178.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca703eb5-589c-40a0-882d-adf07db27ec2/el_pequeo_vampiro_pelicula_completa_en_espaol_latino_animada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d6a5a7e-aeb2-4583-be63-7b1177f5ed24/24455602654.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2de10e21-67ac-4420-9223-a6c944e7d6af/how_to_teach_yourself_brazilian_jiu_jitsu.pdfIn PDF document text
    • http://tuwewigeniwaf.rf.gd/11273806306.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60936b05-c216-418a-9f06-e8e3acff8ee0/lenuxuzorediwul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59824642-8e73-42b8-afa9-6881b376c633/how_to_control_your_tv_volume_with_apple_tv_remote.pdfIn PDF document text
    • https://4e33067b-0f13-4bed-bb9c-ea95f768fd7c.filesusr.com/ugd/23924c_273806c7955a43e7be5cf7aeadf4aea8.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_off0000ea01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA01 5152 bytes
SHA-256: 510d7ef3207cebbe9d18805e5d39e9d3645a01da24c4f3ca247c00ed5c602cdf
font_01_sfnt_off0000fb79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB79 10776 bytes
SHA-256: 16d5cb1f89dfe6ca77d8b5a799b937445c6a9ac60f5219dc2937a43156cee3c8
font_02_sfnt_off00011ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FF9 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.