Malicious PDF — malware analysis report

Static analysis result for SHA-256 75d9c97d37ade101…

MALICIOUS

PDF

68.9 KB Created: 2021-02-23 16:57:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3a3a4216fbf2bdc14ea0b09fe2728c51 SHA-1: 4b28f185ba0115f8f860a91ac653eaaf997c5244 SHA-256: 75d9c97d37ade101cae95f18dd82c9139491f69556fa73f20fc608025eb4dfca
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yafferge.ru/wix?keyword=dk+eyewitness+travel+guide+japan In PDF document text
    • https://cdn.sqhk.co/mojuzizimu/b2kNrjj/camera_magic_trick_app_download.pdfIn PDF document text
    • https://dakewamegiru.weebly.com/uploads/1/3/5/3/135305658/ximove.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421224/normal_5fc7737751b4a.pdfIn PDF document text
    • https://nagejezesalu.weebly.com/uploads/1/3/0/8/130874580/lamelelikanuruk.pdfIn PDF document text
    • https://cdn.sqhk.co/liregevo/wjTKhec/flex_flow_values.pdfIn PDF document text
    • https://tujulita.weebly.com/uploads/1/3/4/6/134687611/c80cbe296bbf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407085/normal_60060edeb4f8f.pdfIn PDF document text
    • http://ppl-nutrshopfit.website/chapter_zero_fundamental_notions_of_abstract_mathematics_2nd_editionhe8l7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365653/normal_5ffe798a5557d.pdfIn PDF document text
    • http://marketeuro.pro/975838219101vxod.pdfIn PDF document text
    • https://bonorira.weebly.com/uploads/1/3/5/3/135346760/9520978.pdfIn PDF document text
    • https://cdn.sqhk.co/mexovaru/8AU7tNR/telcell_sint_maarten_top_up.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kotutuvotijol.rf.gd/2472120853.pdfIn PDF document text
    • http://muvegeposobaxog.rf.gd/49766405252.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_off0000ce08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE08 5520 bytes
SHA-256: 977e7cf8129ee5d83eeef2ac440a71814b4c58b3e6cd38c71c026eab1f09fa83
font_01_sfnt_off0000e10a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE10A 10776 bytes
SHA-256: f80152bcde2e8f6daa91a3adb9faab22c7b2c3cd71b5304b9ba70522779a4b1f