Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b9aeee007a0db1…

MALICIOUS

PDF

69.6 KB Created: 2021-02-15 22:43:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fae6949d5fcc8d5d81d8ea62aa55a16e SHA-1: bc193658f27ce0f9119767f9cfcfe58c11c470bb SHA-256: 88b9aeee007a0db19df08cbe532ad164c40ee42faf87623706bd0cf91673d67f
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/strik?utm_term=taco+bell+crunchy+taco+carbs In PDF document text
    • https://tisalupiruj.weebly.com/uploads/1/3/4/0/134018152/b7594b7811f79.pdfIn PDF document text
    • https://gufonalika.weebly.com/uploads/1/3/4/0/134096228/7e40b9a37.pdfIn PDF document text
    • http://merovew.xyz/rikanojozukupul9fakp.pdfIn PDF document text
    • https://joginogi.weebly.com/uploads/1/3/1/1/131163620/dojumudarinenivep.pdfIn PDF document text
    • http://reduslim-ordina.site/201adcbn.pdfIn PDF document text
    • https://lasomuvexovip.weebly.com/uploads/1/3/0/8/130813571/9387775.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372983/normal_60089ae1c4a38.pdfIn PDF document text
    • https://loguxofe.weebly.com/uploads/1/3/0/7/130775118/tiwukidava.pdfIn PDF document text
    • https://rojanudase.weebly.com/uploads/1/3/0/9/130969060/fd8f07.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445550/normal_5ff77f7227b29.pdfIn PDF document text
    • https://cdn.sqhk.co/nefakovuwot/ehbjgvl/yeezy_700_inertia_legit_check.pdfIn PDF document text
    • http://italywow.space/whmis_safety_data_sheet_for_gasolineiuc6h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414352/normal_5feb61e70051a.pdfIn PDF document text
    • http://nyvelsets.online/asi_se_dice_level_2_workbook_answers_chapter_9w0861.pdfIn PDF document text
    • https://wazalitewisoka.weebly.com/uploads/1/3/5/9/135960923/1981121.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_off0000cfdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFDD 5080 bytes
SHA-256: ea0ed4d8ef7b5136ea9b55a7878d1365bb05293a3bd3a3e421062ba605c8a665
font_01_sfnt_off0000e122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE122 12568 bytes
SHA-256: 7c269a01beee5db7bb7bd1a616aa6f093b5a0fc8e9e786ef97c5ac61bfce2f5d