Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e51c6123eec4ddb…

MALICIOUS

PDF

70.5 KB Created: 2020-11-13 06:21:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a1c480ed99dc6c1869617589041cef19 SHA-1: 14b134fb9a7647c2d1a846305daf8c75a75a4176 SHA-256: 5e51c6123eec4ddbab6ecf7cc5d1af452db358feae861c3dea5d11488a8ce1a3
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-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://trafffe.ru/aws?utm_term=lake+district+winter+climbing+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383573/normal_5f9283374473a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413228/normal_5f978c0417184.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404745/normal_5fa16947d6e74.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/levumoduf/attestation_d_accueil_cerfa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/557ba2dc-ab25-4bb5-bee7-6b08f07be24a/kujurerox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9435106-96df-470a-8af9-4936292d4ef1/how_to_write_an_opposition_to_a_motion_to_dismiss.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/523ef837-a71b-41ee-94e4-3baace29dcf1/physical_geology_across_the_american_landscape_access_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbda5a5d-5cc4-4f33-9250-6bb389eca9b4/glencoe_mathematics_grade_8_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/xatiwemamumes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/496a8297-5f55-4321-b21e-ceb1aafb6c0b/mod_ssl_so_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8da66a9e-3a5a-4636-8b48-aead365b284c/todivaxam.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_off0000ca99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA99 5268 bytes
SHA-256: 85de8b9205f26b9a0eab428e23b337f3632621b1768775915fd83fcea73a285b
font_01_sfnt_off0000dc7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC7B 10096 bytes
SHA-256: 4163a96175fc2c796b6c7d70a9a43fa63c40ce63e0341f5c4e3ff02600552a90
font_02_sfnt_off0000ff04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF04 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e