Malicious PDF — malware analysis report

Static analysis result for SHA-256 c68bfe6a3b1e0fef…

MALICIOUS

PDF

71.6 KB Created: 2020-11-13 16:09:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 4025fc2436c4c1fab44044513cf3d2d2 SHA-1: 11becc2771b3d6d06d488d7cf92b9ad870c2bc23 SHA-256: c68bfe6a3b1e0fef155e2213f17ffa69b9d20fa9a40b857ce4256f24af2d5260
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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=amazon+shopping+app++apkpure In PDF document text
    • https://cdn-cms.f-static.net/uploads/4406170/normal_5f9544a28ad67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418199/normal_5f9d522ab98ac.pdfIn PDF document text
    • https://netiwixavono.weebly.com/uploads/1/3/4/3/134306625/7985782.pdfIn PDF document text
    • https://jazexupojofon.weebly.com/uploads/1/3/1/4/131409098/xigigepedalomujobegi.pdfIn PDF document text
    • https://gekeforoka.weebly.com/uploads/1/3/1/4/131438206/2542072.pdfIn PDF document text
    • https://bazulerijodinib.weebly.com/uploads/1/3/1/8/131856415/winujiz-fepexifit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370089/normal_5f90ccb52b357.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/kewakuko/falling_for_the_ghost_of_you.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/food_combining_made_easy_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/91668979932.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f34b2b8-d1b5-43f2-8c05-eb85215f3491/zowajuvofitu.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_off0000cecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCECF 5104 bytes
SHA-256: 9dd98f3f21d12d709549c60fefc5a24a2a150642e65d0b26a309b8808379dfce
font_01_sfnt_off0000dff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF1 10424 bytes
SHA-256: ad3c6511837e8ec723e3af8331c3b6897498000da2a6586bc4cabe69a123adcb
font_02_sfnt_off000103b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103B3 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e