Malicious PDF — malware analysis report

Static analysis result for SHA-256 19f075acdc944eac…

MALICIOUS

PDF

71.0 KB Created: 2020-12-27 13:08:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 7d0d75c506887247f8036e52915971d5 SHA-1: 6871d4e268a4391556902e5eed2f8d8f5953dba5 SHA-256: 19f075acdc944eac52fd46d0703fd630d7a24425e319b367e043b150e721b456
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by heuristics as a potential phishing lure. ClamAV detection and ML classification strongly indicate malicious intent. The presence of an external URI and the overall classification suggest this PDF is designed to trick users into visiting a malicious site, likely for credential harvesting or malware delivery.

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/123?utm_term=moego+online+booking PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426271/normal_5fdd77d4030d5.pdfIn PDF document text
    • https://cdn.sqhk.co/kubezuvare/7hcVLgi/post_office_open_election_day_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/podiwilur/wjdgcuO/under_map_glitch_warzone.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379370/normal_5fcd712df2013.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463552/normal_5fa62bd63e65f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502178/normal_5fced6007c522.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426088/normal_5fac2a942a759.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/2c8f1ca6-13b9-4628-8c85-209b04d3a1b8/79027629187.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7772f94-f883-4d74-bb56-5e6ad4fd7eea/expiation_ian_mcewan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c205964-dc01-4e99-839a-39f0e1770a2e/93246293504.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/fogofif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b075e927-95da-4c33-8dbf-9cfbbae47d0b/94671720103.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d20d0e9-4b6b-4036-b75c-faacaf3cd79a/acpi_smo8800_1_windows_10.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_off0000dd30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD30 4580 bytes
SHA-256: a6d8ab0fe2a2f6e45dc8aef736c06e0b097fe58b44b082c49c4a54dbda20b368
font_01_sfnt_off0000ecee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECEE 9992 bytes
SHA-256: ce4d9b9a7b0a1815ca8cb650fa163e02ce623a354c4333716e7f856fe36fa77e