Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3b8a3ff6f61f8f5…

MALICIOUS

PDF

73.6 KB Created: 2020-11-23 01:38:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f7a0d7e232b27dea4c26de5775ce8944 SHA-1: 9681d45d617c115deef507bc5b6104437476feba SHA-256: b3b8a3ff6f61f8f5eeae03e0530d07febda98782288e6486cd33479808e82762
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, 'ggtraff.ru', disguised as a free movie download. This indicates a phishing attempt to redirect the user to malicious infrastructure. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.

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
  • 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=an+unfinished+life+full+movie++free In PDF document text
    • https://wuwawibef.weebly.com/uploads/1/3/4/6/134608234/d8ee0b3.pdfIn PDF document text
    • https://fupesovuzej.weebly.com/uploads/1/3/4/0/134016868/vugorijupitegures.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476782/normal_5fa7f67b34329.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378383/normal_5f9931e7b4e8e.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/godewumazek/spongebob_drinking_coffee_gif.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/48021920253.pdfIn PDF document text
    • https://s3.amazonaws.com/gonuxiwela/paturi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bd33582-ed3a-409e-a87a-484379cd2208/79144292098.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/kevizipiretexate.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/bill_cipher_human_form_cosplay.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/6165009293.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_off0000d831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD831 4788 bytes
SHA-256: efc7d2bd9e08f496a05eb3d2db2e566d580c88a9a8ab095ed77bf3de1655cd9f
font_01_sfnt_off0000e845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE845 10436 bytes
SHA-256: 8b5f0972dbb2ca22d08a6c027fd58f0076134220455932682ac2c42261776620
font_02_sfnt_off00010be2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE2 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3