Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ab6f1e9701cfc55…

MALICIOUS

PDF

73.4 KB Created: 2021-03-14 01:44:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 06842926d02f2508335f7d18ea0f8aa1 SHA-1: 265488eb30c3c7491632e266ddfb2261a1227709 SHA-256: 2ab6f1e9701cfc551738feb56160c34af766ebb554c81ba05500d97582a480d7
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to the URL, suggesting a lure.

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://nipisod.ru/wix?keyword=the+most+dangerous+game+theme+of+the+story PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460460/normal_5febe13e5e59a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386087/normal_602f89816594b.pdfIn PDF document text
    • https://pefuxagofir.weebly.com/uploads/1/3/4/3/134359429/posadavunonat.pdfIn PDF document text
    • https://sazejibapox.weebly.com/uploads/1/3/4/8/134863873/6b9d9acf94a332.pdfIn PDF document text
    • https://gasomuvujutomeb.weebly.com/uploads/1/3/4/3/134356107/5064804.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490121/normal_6027960df2352.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453540/normal_601a3a1ee8ebe.pdfIn PDF document text
    • https://vixixufabajuwe.weebly.com/uploads/1/3/1/1/131163632/xakukewukijof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487632/normal_601207f4552cc.pdfIn PDF document text
    • https://latuguno.weebly.com/uploads/1/3/1/6/131606113/kuwasasig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476925/normal_5ffdc582b4d0c.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/daxemo/what_are_ethical_values.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/content_analysis_example.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/baixar_leitor_de_para_android_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/canoeing_merit_badge_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/22409076793.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/pojazexupedukuvofokev.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/heroclix_team_ability_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df03b4d0-e578-44a4-8fb9-d5e041c9a734/71796911708.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE280 5340 bytes
SHA-256: c496ac325953daae1b62845cd06ad691c26a04b0abc665e74006121ca8d14c8a
font_01_sfnt_off0000f486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF486 10452 bytes
SHA-256: fd7f3dcfd6dff74ce7fe28a94996e3c745e5562adf4564abc211bfc1c8bed3c4

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