Malicious PDF — malware analysis report

Static analysis result for SHA-256 801971c61c81b952…

MALICIOUS

PDF

79.4 KB Created: 2020-11-11 19:24:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 89018311da2f939bf66741335563d790 SHA-1: 16166ad07234afee511ed844affbfa0a22c2cb6a SHA-256: 801971c61c81b95272bb8b5c5b965ec6c8f52bcf095faac07cb73e098cd4165b
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://traffking.ru/123?utm_term=ap+world+history+summer+assignment+2019+answer+key PDF link annotation
    • https://norudajesopoz.weebly.com/uploads/1/3/4/3/134340776/zunepazosomanu_mobozopududirig_perunar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403947/normal_5f99c06d1ee0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388627/normal_5f9a82949bf97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443578/normal_5f9f017f8b0c3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c13488a2-9b17-475c-896e-9635d1bf9cd4/reronoxepisutisutawi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d21ab9a9-42d2-4a3d-8499-fbe57b6cdd2b/bifixisivolosu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afbfa73d-c8ac-444e-be9a-7b92c161f00f/fuvejiveboziwudu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0ae7cfe-74d8-4dd0-a775-137f594d33c1/37170221760.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23287131-7b65-480c-9e5d-90d54d5def7e/gusubopiporelaraledodago.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e65237a4-a456-40ed-b7d0-c502e5e02808/70811862764.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74f3317b-0e9e-498b-b614-751e911f88f5/bingo_game_template_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/rokidiwalusufezimasefures.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/chapter_17_wordwise_answers_earth_science.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_off0000f468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF468 6104 bytes
SHA-256: d1878d40447298ea41dc5a7fd4f34b468d3dced689705526b16c5ffe6fd4b8e0
font_01_sfnt_off00010914.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10914 11128 bytes
SHA-256: b88f94c1f9b879e660331e906f6dd92116ef3a4afe3f2ddc1df709f5ce1e930d