Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d5350c7f5f1b66a…

MALICIOUS

PDF

68.0 KB Created: 2020-11-11 23:22:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 906fe288a59047f2724849d54070fb30 SHA-1: 965a303b5eac71b844bd18f64a91bd69623b63c9 SHA-256: 2d5350c7f5f1b66a11db3277c9cd41512c251974b9ba7b4d9da186e923af8c2f
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafficel.ru/strik?utm_term=apm+2.8+manual+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380090/normal_5f8b525cde18b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454290/normal_5fa4fdc108c74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383678/normal_5f9700bf3a936.pdfIn PDF document text
    • https://bufazori.weebly.com/uploads/1/3/4/3/134377245/nuwokefuzuk_fesuzitajuso.pdfIn PDF document text
    • https://tusunupo.weebly.com/uploads/1/3/4/5/134507020/lewupupog-nefaw.pdfIn PDF document text
    • https://tijujuvuxerupuz.weebly.com/uploads/1/3/4/2/134236121/32eda364.pdfIn PDF document text
    • https://worozimovazez.weebly.com/uploads/1/3/1/4/131406108/pipefibax-melavig.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/gupuso/schopenhauer_pessimism.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06edae99-2f74-4990-b088-e9b935a0e7d5/wowibikatuwuvunudifoxe.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/jurnal_bahaya_merokok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7a387a1-9a6e-4bec-9bda-f93334944caf/35388457924.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66d20d03-6e76-4dcf-97f7-67a365d1ccfb/suxupedematefetu.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_off0000ce57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE57 5260 bytes
SHA-256: ad547fcb99924dc13829814a9e848dfb114688ca3e215c1596296b1cf8fbb4e2
font_01_sfnt_off0000e034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE034 10500 bytes
SHA-256: 46ffd061da2b28d1e3837ac1810f2c8821ecf66850b57c5cd04474dd95726f81