Malicious PDF — malware analysis report

Static analysis result for SHA-256 69f511034e209929…

MALICIOUS

PDF

74.8 KB Created: 2021-09-23 01:57:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: d1d9254358c733b58aee655ce7050f0d SHA-1: 55eece6d6dff1b8a35b86bded2571c1598bceb6d SHA-256: 69f511034e20992950f8caff9a9a05cd5be9b88b4111367051068a91b6b1befd
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 0.9951

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 http://joltiy.ru/uploads/files/xexobapetixavu.pdf In PDF document text
    • http://dalnoboy.org/data/filestorage/upload/files/gobudojuwijatezeline.pdfIn PDF document text
    • https://luatkhangthai.vn/upload/fck/file/28639699794.pdfIn PDF document text
    • https://premium-house.uz/images/file/pobaxad.pdfIn PDF document text
    • http://custom-mugs-factory.com/uploadfile/files/5336716347.pdfIn PDF document text
    • https://webrobogo.hu/kepek/64564810164.pdfIn PDF document text
    • http://fteq.ru/files/file/37850524766.pdfIn PDF document text
    • http://napiarsaigh.com/images/1873914294.pdfIn PDF document text
    • http://laibros.com/ckeditor/userfiles/files/90023493330.pdfIn PDF document text
    • https://autonoleggioassereto.com/file/67879236806.pdfIn PDF document text
    • http://ansatrans.ru/admin/ckfinder/userfiles/files/bavadewugevunuvaz.pdfIn PDF document text
    • http://lindseyderence.com/userfiles/files/fokevosevok.pdfIn PDF document text
    • https://i-intelli.com/ckfinder/userfiles/files/57340115355.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/tixirokokezivuzemefizew.pdfIn PDF document text
    • http://digitalpolicycouncil.com/imagenes/file/28068507870.pdfIn PDF document text
    • https://gujaratisamajparis.org/upload/files/28532048678.pdfIn PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/490c38fe99fed0406850677f7d5d6b89/79283940976.pdfIn PDF document text
    • http://metalzilemboeventi.com/userfiles/files/padezaregu.pdfIn PDF document text
    • http://rtm-plus.com/ckfinder/userfiles/files/96405776913.pdfIn PDF document text
    • http://www.kyousei-fukushi.or.jp/system/ckfinder/userfiles/files/80027251541.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/dd69017a0618a4972582a013858a2685/20889442217.pdfIn PDF document text
    • http://marleenjansen.nl/images/uploadfiles/vivusuwoxudejij.pdfIn PDF document text
    • https://mudraconsultancy.com/uploads/files/webesofitusaz.pdfIn PDF document text
    • http://cloudinfo01.smartevolve.com/images/ckeditor/files/tasikivixiva.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=calculus+early+transcendentals+9th+edition+by+james+stewart+pdfPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE13 11656 bytes
SHA-256: c64ab865aea36d7ac4252e8f7b7e52dba73a78a595ed9b3415125d39174fb2b9
font_01_sfnt_off0000d976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD976 16856 bytes
SHA-256: 4ee9e0b09cb1889ef5818b75db9dff1164141b175c90acc13590965ba7a4538a
font_02_sfnt_off00010530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10530 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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