Malicious PDF — malware analysis report

Static analysis result for SHA-256 692f5c7b89dedc5e…

MALICIOUS

PDF

69.8 KB Created: 2021-02-26 08:16:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 3114aa8e04f614b14f2ee75126a83676 SHA-1: 6f1c69c0fa884686ba8b1087256f79c119bdecd9 SHA-256: 692f5c7b89dedc5eea6df0789d4f3f9cf4a66f61eb5bf503813e47bdd661f2c1
184 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to disposable domains and redirector infrastructure, indicating a phishing or malicious content distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious redirection scheme.

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/wb?keyword=where%20to%20put%20patches%20on%20cub%20scout%20uniform In PDF document text
    • https://cdn.sqhk.co/tiwumixe/6jCSghm/96848275046.pdfIn PDF document text
    • https://cdn.sqhk.co/vibebexez/ieFichc/25739139836.pdfIn PDF document text
    • http://taforojujutusig.mygamesonline.org/pazezuzunorowoz.pdfIn PDF document text
    • https://cdn.sqhk.co/xotosobupis/cjbIZKP/92395095545.pdfIn PDF document text
    • http://dikerulaba.22web.org/37964405471.pdfIn PDF document text
    • http://forovasax.medianewsonline.com/gixukizezagabo.pdfIn PDF document text
    • http://kamikofonem.mygamesonline.org/honda_mower_hrr2168vka_parts.pdfIn PDF document text
    • http://lukezelulevuf.22web.org/6505141043.pdfIn PDF document text
    • http://desajegurake.scienceontheweb.net/how_to_find_a_christian_life_coach.pdfIn PDF document text
    • https://mevinabepoke.weebly.com/uploads/1/3/2/7/132740553/0c39e56.pdfIn PDF document text
    • http://vetebozo.mypressonline.com/behringer_x2222_manual.pdfIn PDF document text
    • https://zubowosusotikip.weebly.com/uploads/1/3/1/6/131637009/xotopa.pdfIn PDF document text
    • https://fudukonuxevefez.weebly.com/uploads/1/3/4/6/134606022/duxapokuwed_ranigisano_puzofuxajo_refoxagepexere.pdfIn PDF document text
    • https://nogikukejigili.weebly.com/uploads/1/3/0/8/130873965/2993910.pdfIn PDF document text
    • https://cdn.sqhk.co/notenirikev/iiAicji/zombie_killer_3d_game_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wejufutaz.onlinewebshop.net/ontx_stock_buy_or_sell.pdfIn PDF document text
    • http://sojufuka.atwebpages.com/what_to_do_before_2d_echo.pdfIn PDF document text
    • http://bedozev.rf.gd/certificate_of_practical_completion.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_off0000d4da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4DA 5376 bytes
SHA-256: b5cad46b253cf02f307dba3d33127960f8dd7fe472e309022c3a9dfca672647e
font_01_sfnt_off0000e703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE703 10184 bytes
SHA-256: e9193b9296a72de95f9f4e81c1afebdc9acad2a1f634837dd2c3183114dd5b27

Open this report in the interactive analyzer, or submit your own file for analysis.