Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c79c2fabb49f8b2…

MALICIOUS

PDF

72.4 KB Created: 2020-12-03 06:38:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 249cab7abdf34c47abe2f340b5354c76 SHA-1: 1748742d382b1c4cf29e8beb1641b2efa7572deb SHA-256: 8c79c2fabb49f8b26c6cde83ea360723b9f037c28bb90b873baedafacb19542f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL, 'https://traffset.ru/123?utm_term=unofficial+disney+guide+2017+spreadsheet', suggests a phishing or redirection attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of embedded URLs are common in phishing lures, often leveraging JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://traffset.ru/123?utm_term=unofficial+disney+guide+2017+spreadsheet PDF link annotation
    • https://taxufutusa.weebly.com/uploads/1/3/4/5/134514166/415a7ba.pdfIn PDF document text
    • https://molujeridinu.weebly.com/uploads/1/3/4/4/134400438/bifizulunedaban_fimodozililete_zejat_widuk.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/vudivuzakal/gapuvimav.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/72152177267.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/android_safetynet_example.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/87595509151.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcb2f758-ca05-4eea-b745-e3c67089ebc7/bevagulamixofopox.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/serubumorafunotuxadugefax.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf0cb73299f0c5438bb58/1606217932992/gidizozinaligopur.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cbc7c6d964583621a279/t/5fc40e84f8cdb769c6622f4d/1606684292726/water_ridge_pull_out_kitchen_faucet_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fb036b97992eb55c812d/t/5fc602b13c02f22b9ddb1324/1606812338802/gospel_of_dismay_lyrics_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/fast_friendly_cab_oakland_ca.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9e7e386-42e0-4087-8cfd-c1ef0cbdb69b/tidivuxezu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4c77ac89e1c4b8fd772ad/t/5fc559643f75b16643860184/1606768997102/liwevusabifetipoju.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d4c78139af037644e8c4/t/5fc15b901972c46e3cd19360/1606507408976/lipatoba.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBF5 5800 bytes
SHA-256: d66f2b27fe443b8ca74e1c25b132419c7b87ed3dd86915e516bf8922a403e5f5
font_01_sfnt_off0000dfb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB8 11424 bytes
SHA-256: e5e7d6429dceadd11ba8bb02b7b180af7b779937972c1b5571d8adeb767f9211
font_02_sfnt_off000104c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104C7 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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