Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c18e14ebfb4dd6a…

MALICIOUS

PDF

99.9 KB Created: 2021-03-02 15:53:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 55e09feeb1a9d26cf4a1d0127bb6f8eb SHA-1: 79a3f7b18ed303c9e4b1de17025ea4c7e039117c SHA-256: 0c18e14ebfb4dd6ace8af5ab053423a2062f47ca3cc3caf4b8e831a12a9ad7f4
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to PDF files hosted on various domains, suggesting a link farm or redirection mechanism. The primary URL, https://lozipotod.ru/strik, is likely part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://lozipotod.ru/strik?utm_term=the+impossible+summary+tagalog PDF link annotation
    • https://cdn.sqhk.co/wepunajexiju/HsjivKV/ski_safari_adventure_time_mod_apk_android_club.pdfIn PDF document text
    • https://cdn.sqhk.co/sofizagumup/hbichib/boat_race_drinking_game_video.pdfIn PDF document text
    • https://cdn.sqhk.co/suzironanes/lieVzid/mod_pizza_locations_colorado_springs.pdfIn PDF document text
    • https://girawosanisab.weebly.com/uploads/1/3/0/7/130740609/pubokapij_regeve_kixokam.pdfIn PDF document text
    • http://beautysale.site/nolafarexanugiboj21zru.pdfIn PDF document text
    • https://cdn.sqhk.co/kokojisip/gjLge1t/zetututonujabutopenubug.pdfIn PDF document text
    • https://dowozazufexu.weebly.com/uploads/1/3/4/6/134606261/6636032.pdfIn PDF document text
    • http://nawukebakesejid.iblogger.org/can_i_use_google_maps_api_for_free.pdfIn PDF document text
    • https://zogudoweno.weebly.com/uploads/1/3/1/6/131637773/239849.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/CGjihgg/dhoom_2_full_movie_hd_1080p_download_pagalworld.pdfIn PDF document text
    • https://cdn.sqhk.co/nizivatitogu/jgdigY0/juzivakagololaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tugupora.epizy.com/97665594428.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000150b0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x150B0 27064 bytes
SHA-256: f31e9835886f015f7e6cee03876ed1ac116e3ac8124ec10cc470ba29b3e46024
font_00_sfnt_off000116bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116BD 5424 bytes
SHA-256: c7877905477ec4aebe218cd36cd75f721003fac3f704e0dbf350962805f4b166
font_01_sfnt_off00012909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12909 11948 bytes
SHA-256: 1b89c24d0a79cb5c74be0314a26871b97174b13918144fedbf626a2ba03d5fe8

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