Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c6fa8225038d067…

MALICIOUS

PDF

66.5 KB Created: 2020-12-09 10:04:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f41e35e9522d5558b53da11a1ca35b9f SHA-1: 91b4f99af811062dfde7e36625a4b9035bade24b SHA-256: 8c6fa8225038d0670adb2889e636814250d6363140b43995137d240c162b3ecb
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-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://traffking.ru/strik?utm_term=where+is+area+code+98940 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374956/normal_5f923d9b6fe7b.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/5fc2d442e9fc3622d52eb2cd/t/5fc5cd5b3f75b166439d649b/1606798692838/sentence_openers_ks2_display.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd070e2c6de34c7a3a2e27/1606223630328/marriage_book_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc72e3dbcf5f06bcb77810c/t/5fc92ae5d36c7c1f84192981/1607019241317/8512026303.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf3101491241adc44b4c3/1606218512873/introductory_chemistry_tro_5th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a172a437-7004-4116-b970-9c213ccbdbf5/jennifer_lopez_engagement_ring_arod.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc326f27848ba205d273b7f/t/5fc649d83570fb44d1d8ea0f/1606830558113/auto_send_message_whatsapp_iphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/964c78f1-0088-4f2d-b8a1-8524ee67f1f7/80871074052.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d86f5998-ffe2-47c1-9f0b-42c4acd720d4/93494239123.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/558cd204-3ea0-4b58-8e6f-6d3ca7b6d7d7/jolujomawowexojibozesape.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf75e6457125654ffca14/1606285152170/29277120224.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_off0000c7c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7C2 5588 bytes
SHA-256: 6157f4e35be8490a53c3cabe5824516d5096fada27a213e8f6c3104d11adc9cc
font_01_sfnt_off0000daca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDACA 10336 bytes
SHA-256: 6be937844af80d338c55f403c3a77c8b2b14abe28cffb1f3da6330f55ff36498