Malicious PDF — malware analysis report

Static analysis result for SHA-256 895bd54d5cd6c39e…

MALICIOUS

PDF

97.9 KB Created: 2021-06-25 23:37:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 8ce5c9f53605d0478eb5bb8fdadcf1de SHA-1: 10efb83f8eafafc9afd7f89f5f8c01cff0029472 SHA-256: 895bd54d5cd6c39e7f86a7e370b3d2f5705d3be05e68b1937e8b990a616930df
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as a malicious phishing and advance-fee scam lure. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting an attempt to direct users to fraudulent content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to distributing further malware or phishing for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crysiq.ru/uplcv?utm_term=wizard+geography+for+general+studies+pdf+free+download
    • https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/096cee9385437d3b5b462a17b24f9452/kajuxegitulomew.pdf
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/2psvkceqra4jn6o330bgototu0/jamamobaxulonasojewaruram.pdf
    • http://lohsclassof70.com/clients/3/31/31ca850ff086a58b81c8700e10a01852/File/5244254466.pdf
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/al3a80loqj3i0bh1p60a6sioj9/lulilapedoviraruduzamomob.pdf
    • http://capesociety.ca/uploads/files/66334260434.pdf
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608177ef0bab9---vanijaxerebudina.pdf
    • http://mdc.ir/ckfinder/userfiles/files/20856990203.pdf
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/c2c39908ad4a0b6a1204773553a1effb/rametugub.pdf
    • https://ludifrance.fr/userfiles/file/97005918147.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/80b0c8f06887234de6100a068d061a71/raxufizivobatamuvazep.pdf
    • https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/e0hcrqjmav3323s8e4rbn8p097/daxatajebotad.pdf
    • http://dostavkaturov.ru/files/file/45922579801.pdf
    • https://www.ppmcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/f8ocppcr0bbiht44rp3em97cpk/41118470759.pdf
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/ee905e4f2fd8c84f37e4d429ca6e1865/40745728858.pdf
    • https://klairtransport.com/uploads/files/15724286897.pdf
    • http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/1608df2b7e40c6---30151004078.pdf
    • https://makiriaszto.hu/ckfinder/userfiles/files/mupusaxojobuboxurotafiru.pdf
    • http://dharmapremipariwar.org/userfiles/file/4129347013.pdf
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/dso8l1991c6ofbp118o4pn4g33/93708473401.pdf
    • https://bataretak.com/img/files/file/lufirekefokosomezifunu.pdf
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160b0b65818924---zejelefumezef.pdf
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/9ub3fq82ppbi9ve3ji9kuli2r1/goripijokizifofopukawo.pdf
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/22b38e8af2a603e824ed158d3e83de64/90259285101.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011ba4.bin
32a21deb3687df938b07ff1350b7af790bcb3764a0f3ecf567ec24cc26d7cb75
pdf-font-stream PDF embedded font (sfnt) at offset 0x11BA4 17112 bytes
font_01_sfnt_off00014829.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x14829 16792 bytes
font_02_sfnt_off00016040.bin
019cf1abf6aa397dc7ad14895d08846ef7639d4084db195fb7b2f1bd111ab9a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x16040 11128 bytes