Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e9e4599f27d99f1…

MALICIOUS

PDF

79.6 KB Created: 2021-02-24 10:28:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: d2b76adf23c26228316f6da2a44c3a40 SHA-1: 9718491d0d4ed6581d1120f775e97008f9daef89 SHA-256: 6e9e4599f27d99f159c3f2355e080aa1b70bbdbeb1c23d84f7ed57f69958e038
126 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with a primary focus on 'baarspo.ru', suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though partially obfuscated, mentions 'Executor for roblox 2020', likely a lure to drive traffic to the malicious URL.

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://baarspo.ru/wix?keyword=executor+for+roblox+2020 PDF link annotation
    • https://cdn.sqhk.co/nulaliki/Kjhhcjc/64389428522.pdfIn PDF document text
    • http://hisgohar.site/zijafekijipovutopivovytf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426688/normal_5fca1ff3a6f9f.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelewexo/cqjjidj/25542382958.pdfIn PDF document text
    • http://hugertely.xyz/6105041514465k5d.pdfIn PDF document text
    • https://cdn.sqhk.co/fafojipedul/jSjjTYu/31735625167.pdfIn PDF document text
    • https://cdn.sqhk.co/bemapebe/ycja4gd/neha_kakkar_ke_new_song_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/rorezina/bhgjjLi/10835708156.pdfIn PDF document text
    • http://cocobeautybar.ca/385696072302fe63.pdfIn PDF document text
    • http://zexawil.22web.org/kipotefijonuxodolilogi.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/xtBhcif/28358082346.pdfIn PDF document text
    • http://sudesisobibimit.22web.org/43366540406.pdfIn PDF document text
    • https://cdn.sqhk.co/fosulavale/bSjjhh2/9652822765.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lixisariwulo/bijunobizamawoni.pdfIn PDF document text
    • http://mibesajaku.epizy.com/39931665015.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/minecraft_servers_1._10.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/destination_calabria_song_free.pdfIn PDF document text
    • http://sujidise.epizy.com/6070095648.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/free_movie_end_credits_template.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBD 4652 bytes
SHA-256: b8c94c4e0550df1ab9d0ebddfb93eb167ae8eca2ba216a4344a9f4e7b3048f7b
font_01_sfnt_off0000fdad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDAD 10856 bytes
SHA-256: 9fb0afaab9c484fd18fecc15da2972304b30ae13c226b0f77cfd1b37f316685a
font_02_sfnt_off000122ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122BA 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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