Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cbb0e8ec1be0874…

MALICIOUS

PDF

72.6 KB Created: 2021-03-20 19:08:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: ba4094628ebdd9220c5d940b66d57662 SHA-1: 49ba45d6ed3438c019d3e438a093d78295fe83ac SHA-256: 4cbb0e8ec1be087423d445f54768468207e1466092aceea508d5bbddfccd99b1
126 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are hosted on disposable domains and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to a product manual, suggesting a lure to disguise the malicious links.

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
  • 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://botokaw.ru/wix?keyword=hamilton+beach+flexbrew+model+49983+manual PDF link annotation
    • http://axecheat1.xyz/wuvotowomitoxaverezefejebzf8a.pdfIn PDF document text
    • http://latirogemiwufiz.22web.org/berthing_report_meaning.pdfIn PDF document text
    • http://pazefezos.mywebcommunity.org/why_does_my_dell_inspiron_says_plugged_in_not_charging.pdfIn PDF document text
    • http://chempion.coffee/148307907068g31e.pdfIn PDF document text
    • http://ladujose.sportsontheweb.net/graphic_design_jobs_atlanta_ga_entry_level.pdfIn PDF document text
    • http://mirolibilo.iblogger.org/dell_790_core_i3_specification.pdfIn PDF document text
    • http://kvadro63.ru/how_hard_is_shrm_certificationnogph.pdfIn PDF document text
    • http://migunovaj.iblogger.org/13324639232.pdfIn PDF document text
    • http://prizinsta365.website/mewigafewesuwowozu9nqne.pdfIn PDF document text
    • http://rubefuziv.iblogger.org/xebelozalizukolulabeti.pdfIn PDF document text
    • http://remoliwagofaju.mywebcommunity.org/nowogolejeperiguriwoko.pdfIn PDF document text
    • http://zaxunux.iblogger.org/ncte_full_form_in_college.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zenujilap.epizy.com/lewapivisoneb.pdfIn PDF document text
    • http://banolepepo.epizy.com/40698721169.pdfIn PDF document text
    • https://729282ec-1290-4cbc-9302-cf8a24acd4c7.filesusr.com/ugd/42c189_c0a01a19808e4aff8344b03426ddde5d.pdf?index=trueIn PDF document text
    • http://latowetutut.epizy.com/66116938893.pdfIn PDF document text
    • https://50b44c92-959e-4a15-bf83-93d6b2b518d6.filesusr.com/ugd/3ed44c_9e2dc073f8244becbee8ebfdd69f12ca.pdf?index=trueIn PDF document text
    • http://lizusesujujes.rf.gd/formation_agent_d_escale_royal_air_maroc.pdfIn PDF document text
    • http://vusomon.epizy.com/bojatujowawaku.pdfIn PDF document text
    • https://e9155d39-0f7d-4366-9ee8-34e17fe3d773.filesusr.com/ugd/9e05b8_b62754e46d8f4a89b91a1d0ebf8627ba.pdf?index=trueIn 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_off0000da4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA4A 5944 bytes
SHA-256: 983622c29993ba31ff2a76dfed5383136f87502cf4e869e6f1da13841dea2b08
font_01_sfnt_off0000ee78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE78 11320 bytes
SHA-256: 19538e4902066755b633bd80446875af052f8caf3f0662fb3a3044755800dfc1

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