Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8731512abae3972…

MALICIOUS

PDF

65.3 KB Created: 2020-12-22 15:49:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 294bc81adc10b3b12e27bbed99417293 SHA-1: 232e1c0df77f4ab437f7d8100427e46fe53d26b6 SHA-256: e8731512abae3972dc4bad0dd01d5cbc3e42286cf4e59aa74115bbb8545b0114
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 0.9998

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://trafffi.ru/123?utm_term=hp+laser+jet+6p+manual PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9c4219c-6e10-480e-a767-a60fb7cf5776/a_short_course_in_digital_photography.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfb19a97599144ebd8587/1606286107239/gosafojorezu.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/28003173519.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05c76137-9aa9-4f31-8754-48a31ba2b79b/42900633104.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db15896b-fed2-4769-b978-cc6d22149758/vhs_opening_sound.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69724592-0dd9-4369-9feb-61a765618b8b/38064213894.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da745ebb-8193-4cc2-a57b-bacf26bb5a64/56655095803.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7e376ce-7684-489c-a738-620765a6d9c8/jikerulotozixufovugi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51c18a8793968642360ab/t/5fc80c64ba6c854291be705f/1606945895432/vibexokidixonidoveva.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/rpa_automation_anywhere_tutorial_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ccaf494-c249-476e-8144-dd6c547ed2a7/wasipo.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/daniel_h._pink_drive.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_off0000c35d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC35D 5156 bytes
SHA-256: f7551947af0f0e2c8d8fe71c618f51b9ccc0de0b2ce2b579e53785314d91d52e
font_01_sfnt_off0000d4d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D0 10404 bytes
SHA-256: 992d03b7751efa0ef270de7a55eeaabc0430fe86b44078dde15c6155a9842d7f