Malicious PDF — malware analysis report

Static analysis result for SHA-256 edfcf7dd0f58e0fc…

MALICIOUS

PDF

70.9 KB Created: 2021-01-09 19:12:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bf3f15773141bd8104145d3871d1ed21 SHA-1: 9de9b79d1f713fd74460390febfb1953bcb0bcae SHA-256: edfcf7dd0f58e0fc373b2855f5ea781cb65de34a05540ee6604292f10100855c
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The embedded URL points to a known malicious redirector, suggesting the document's primary purpose is to redirect users to a malicious site. The document body, though heavily obfuscated, contains text related to a poison control center, likely a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/aws?utm_term=vergiftungsinformationszentrale+f%25C3%25BCr+%25C3%25B6sterreich In PDF document text
    • https://riwurarelix.weebly.com/uploads/1/3/4/4/134484082/fawijutetuv-tejimamog.pdfIn PDF document text
    • https://cdn.sqhk.co/xixumobun/z9Cgjgc/62021985512.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370059/normal_5fb48a84dc4eb.pdfIn PDF document text
    • https://site-1175994.mozfiles.com/files/1175994/stranded_without_a_phone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410414/normal_5f9b08fa8097f.pdfIn PDF document text
    • https://cdn.sqhk.co/zutujodara/dggy27F/dunkin_donuts_menu_drinks_iced_coffee.pdfIn PDF document text
    • https://cdn.sqhk.co/luluzefob/jhUijeM/ludo_game_online_2_player_free_download_pc.pdfIn PDF document text
    • https://site-1177929.mozfiles.com/files/1177929/supafivewudokunuwetureme.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454668/normal_5fb8c47b4066e.pdfIn PDF document text
    • https://site-1168507.mozfiles.com/files/1168507/35936276416.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d4a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A7 5568 bytes
SHA-256: b15215347468b1f976d2815570d4d8632cf6689d8554e42c84e57dd0e64510c6
font_01_sfnt_off0000e6fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6FE 11560 bytes
SHA-256: 7516569b16fd9de1bdffd854d0123444d5e2d234b3d761a6dc6f7a0ba1220165