Malicious PDF — malware analysis report

Static analysis result for SHA-256 888878806ada62f6…

MALICIOUS

PDF

66.9 KB Created: 2020-12-19 01:22:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ee8db53584f5380dc235db03fbf74f5e SHA-1: b9075427a186086e3dcc1988eff0fe35af884f3f SHA-256: 888878806ada62f65380fb44cdd148af9f8b817d901cba206a279f9b03bcb325
96 Risk Score

Malware Insights

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

The file is identified as malicious by a ClamAV signature and an ML classifier, indicating it is likely a phishing document. The embedded URL points to a suspicious domain, suggesting an attempt to redirect the user to a malicious site. No scripts were extracted, but the PDF structure and embedded URI heuristic strongly suggest a phishing lure.

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://traffking.ru/123?utm_term=politics+of+friendship+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384142/normal_5fad9edd14102.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394068/normal_5f9339bd215f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482399/normal_5fcd75cbdac38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386609/normal_5f8d49ddbac4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450139/normal_5fa71c070c40d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417983/normal_5faa2e3a38eec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc2b80e5bcb0228a28e2589/t/5fc4135bcb3e0f5771cf69f5/1606685531531/presto_pizzazz_pizza_oven_instruction_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb7da279-1111-4c39-a09d-57184f963e46/nezowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/658003bb-bb2a-4dc7-ad37-2f2c703030d9/sosasididigu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd75373c-810d-4219-9ac9-da732ac57b71/zubewamamugul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd35760b-dc0a-466d-b20e-dc9859eba5e6/hot_beverage_dispenser_machine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa937017-1aa4-48d7-9e79-c927c439f015/wopopaninedabativex.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_off0000c94d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC94D 5036 bytes
SHA-256: 72b57a893b381c6f57cb69d73231e140b772b8efa77b60f478baa2f1229f9c99
font_01_sfnt_off0000da69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA69 10820 bytes
SHA-256: 8c1628e4ab2ebe057d9fa149ebb5b4e14705f84bbf47f5c8f32f12f71b4c85c3