Malicious PDF — malware analysis report

Static analysis result for SHA-256 f14826408a5099c5…

MALICIOUS

PDF

80.4 KB Created: 2021-02-23 02:20:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 09fc48d7cff75e727d026019b155b50e SHA-1: 4944eaba0f31ba981836fcaaeae03e6f420e3093 SHA-256: f14826408a5099c5b1246aa93cc103884dd3e6bc1f5d07cc2c85b1fe676b3289
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a significant heuristic indicating it's a link farm on disposable hosting. The document body, though heavily obfuscated, contains text related to search queries, suggesting a lure. ClamAV and ML classifiers strongly indicate maliciousness, likely related to phishing or malware distribution via these links.

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
  • 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.
  • 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://bologen.ru/aws?utm_term=does+chicago+style+use+parenthetical+citations PDF link annotation
    • http://prostosite.site/fufubelozidetalivw7j1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366947/normal_5feb79e97f094.pdfIn PDF document text
    • https://katebobuwusa.weebly.com/uploads/1/3/1/3/131384636/manelekelasivan-bolilagiz-gujolivavanavus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475859/normal_5fcc6d31e54c7.pdfIn PDF document text
    • http://vas-rem.ru/28448454692gb3iz.pdfIn PDF document text
    • http://websporizle3.com/playerunknown_s_battlegrounds_license_key._txt5tjq6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404124/normal_6014e936124aa.pdfIn PDF document text
    • http://devicesprotectionforusers.site/muvutazixa3sri1.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/fzLSieE/super_fowlst_2_ending.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410678/normal_600545c86b113.pdfIn PDF document text
    • http://kemotunitajifap.iblogger.org/xajekabimanemumodize.pdfIn PDF document text
    • http://artdebug.site/38853479153dfzzy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450038/normal_6033fb0966b9b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dekutob.epizy.com/shortcut_to_insert_row_in_excel_sheet.pdfIn PDF document text
    • http://pegalisijeg.epizy.com/excel_two_sheets_side_by_side.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_off0000fd8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8D 5296 bytes
SHA-256: c8dd317f8dbe389267388b7df0fd31647e111dfa14363754d8cb37f5844a3525
font_01_sfnt_off00010fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA0 10816 bytes
SHA-256: f355396b46fbad97d86603125ff83144f704469abd49cbb54fa714973769ceb0

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