Malicious PDF — malware analysis report

Static analysis result for SHA-256 f64abcb42ee7d5b0…

MALICIOUS

PDF

88.5 KB Created: 2021-03-24 09:25:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1b3797aa1e25f9d508cd522423dee804 SHA-1: c26cd29052a254a1bb445a3a650ced4947408d05 SHA-256: f64abcb42ee7d5b0f10d0a2fa54f19d72ac120eea0bb21c658a4b02117d02564
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://nipisod.ru/wix?keyword=classification+word+search+answers+finder PDF link annotation
    • http://moneyindia.site/power_rangers_super_ninja_steel_movie_in_tamilxigfr.pdfIn PDF document text
    • http://expo-kit.ru/77798979955aqtbb.pdfIn PDF document text
    • https://cdn.sqhk.co/tunixomaj/jifeQlf/wafatalisetedezume.pdfIn PDF document text
    • https://totakolexab.weebly.com/uploads/1/3/5/3/135391630/3d871c3f6faa8.pdfIn PDF document text
    • http://lemakomude.sportsontheweb.net/jogazezusebefaxibinejo.pdfIn PDF document text
    • http://xsale.trade/how_to_do_calligraphy_for_beginners_with_normal_pen5ws34.pdfIn PDF document text
    • https://cdn.sqhk.co/terodekijur/cFVyi1O/kijofifozebuve.pdfIn PDF document text
    • https://tolejavufagus.weebly.com/uploads/1/3/1/4/131437822/7f203600e55a25.pdfIn PDF document text
    • https://cdn.sqhk.co/tetolonul/vxHwZif/sifosadutedobapowijo.pdfIn PDF document text
    • http://rivafigikiwax.medianewsonline.com/sulajigogawob.pdfIn PDF document text
    • http://moditem.22web.org/pokazadosijeme.pdfIn PDF document text
    • http://graatorama.fun/retatesujevoxiwita2vxt.pdfIn PDF document text
    • http://negozio50sconto.info/80125968444w7c6k.pdfIn PDF document text
    • https://cdn.sqhk.co/nomavunut/gijhbUm/39268228967.pdfIn PDF document text
    • https://donabetolemi.weebly.com/uploads/1/3/1/6/131637402/1a64685.pdfIn PDF document text
    • https://cdn.sqhk.co/rezejigobip/l8qqXGU/pozipexu.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
    • http://podemerobetalax.epizy.com/tiselokonejavejasikad.pdfIn PDF document text
    • http://neketepa.myartsonline.com/merriam_webster_s_advanced_learner_s_english_dictionary.pdfIn PDF document text
    • http://vugikalijuboxo.epizy.com/87119224387.pdfIn PDF document text
    • http://menikax.epizy.com/futisa.pdfIn PDF document text
    • http://kofepiropi.onlinewebshop.net/10612546927.pdfIn PDF document text
    • http://futebowa.atwebpages.com/10269387902.pdfIn PDF document text
    • http://xapafov.epizy.com/retewage.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_off00010c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C60 5012 bytes
SHA-256: 05bb5055d83878805fe679e3831af91b5ba37d421b10a48e993ab8a5b6a6b5fb
font_01_sfnt_off00011d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D6E 12120 bytes
SHA-256: 6ea3bc4fa0c9cf05dc096c68131a0a5af2edec425968e4eda8f22ab70a7efb38
font_02_sfnt_off0001463d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1463D 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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