Malicious PDF — malware analysis report

Static analysis result for SHA-256 0968d9b0b95fe7b9…

MALICIOUS

PDF

78.8 KB Created: 2021-03-23 04:26:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 04ae9281cd09c5d35465d7f7c3349ce1 SHA-1: 7d4fcde8930022dddbd2fd32563165198b26f669 SHA-256: 0968d9b0b95fe7b993d7a69743724a47c608a6ee6fa1754f78a213d58335d98c
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to potentially malicious domains, identified by heuristics like PDF_SEO_DISPOSABLE_LINK_FARM and ML_NYX_PDF_MALICIOUS. ClamAV also detected it as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, suggests a lure related to a catalog, aligning with phishing or malware distribution tactics. No scripts were extracted, but the numerous external links indicate an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/award?keyword=catalogo+hinode+dezembro+2020+pdf PDF link annotation
    • https://galixasuja.weebly.com/uploads/1/3/4/5/134518214/xasuko-naroto-wusazil.pdfIn PDF document text
    • https://cdn.sqhk.co/lebereme/cMidhfi/droidcam_obs_audio.pdfIn PDF document text
    • http://mavito.online/vunonaguribisesilujmh333.pdfIn PDF document text
    • https://cdn.sqhk.co/zapimafe/9gh6jdW/70625945453.pdfIn PDF document text
    • http://kejoxemubogese.mywebcommunity.org/dofodu.pdfIn PDF document text
    • http://top-odejda.com/genivorizaze7qe.pdfIn PDF document text
    • http://golixudib.mypressonline.com/roxativitikufajejudova.pdfIn PDF document text
    • http://ideal-it.fun/data_specialist_interview_questions_and_answersrol1b.pdfIn PDF document text
    • https://nuvomananakoleg.weebly.com/uploads/1/3/1/4/131453817/d7e936f.pdfIn PDF document text
    • https://falumegobe.weebly.com/uploads/1/3/4/7/134702986/3884184.pdfIn PDF document text
    • http://idealsit.space/dear_comrade_movie_in_tamilmvzhnhr.pdfIn PDF document text
    • https://cdn.sqhk.co/mugejufunij/jdmNJgi/61541261371.pdfIn PDF document text
    • https://jibowosiz.weebly.com/uploads/1/3/4/6/134632869/9074129.pdfIn PDF document text
    • https://fefedajukuda.weebly.com/uploads/1/3/1/0/131070841/zazetulepuxani.pdfIn PDF document text
    • https://cdn.sqhk.co/mamevugixej/gegdkjd/environment_include_exclude._net_core.pdfIn PDF document text
    • https://wifiluguzuz.weebly.com/uploads/1/3/1/4/131437957/wilujosonaginis.pdfIn PDF document text
    • https://cdn.sqhk.co/bafesugoguwi/6skfih5/xuzufefulilesoxifuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/apex_code_developer_s_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/tasilosibikijuj.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/mamixisafevatowigej.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/authorization_to_release_information_hipaa.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/jijojil.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_off0000f11c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF11C 5648 bytes
SHA-256: 3a579bdc157482ab6f1478ac8c9baab8e6bfa27d36dd6e0872893d79ab63bbfe
font_01_sfnt_off00010422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10422 12872 bytes
SHA-256: 621f2cda6de6550e63b9332bb9bd42cc7bba146066f785d8de6d6370de2a3d04

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