Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1874559bd73d7bd…

MALICIOUS

PDF

95.5 KB Created: 2021-08-02 10:55:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c554ed4752209b7644f41eea41d86431 SHA-1: 9ae4b528df29c6a48ad34754b24734619cfc1fee SHA-256: e1874559bd73d7bd03199f59a35ef20cf653a4b8c7a7bebde3004f8df3ad343a
236 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of an advance-fee scam and a payment redirection lure, aiming to deceive users into fraudulent financial activities. The presence of numerous external URLs, many hosted on compromised WordPress sites, suggests a phishing or redirection campaign. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate malicious intent, likely involving the exploitation of user trust to facilitate financial fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 8

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://medvor.ru/uplcv?utm_term=how+to+register+in+ehsaas+program+in+pakistan
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/625jt956fsivmei7eramaui057/xoxisexejod.pdf
    • http://tortsurprise.ru/upload/redactor/files/25911696260.pdf
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/49b9aafac0a5dd51dc980ef9ceea0307/jafuriduxipi.pdf
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160721129b875c---13510584897.pdf
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160880440e944b---43521217517.pdf
    • http://apexnepaltravel.com/userfiles/file/zasiwabapejamaka.pdf
    • http://minuspk.ru/minuspk.ru/userfiles/file/47872183178.pdf
    • http://energosol.pl/images_cms/file/vaniroletesexivuburo.pdf
    • http://www.aqsclimited.com/EditorImages/file/xexejumavosajubu.pdf
    • http://zovsh.com/Uploadfiles/files/wixizodatabaseg.pdf
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16085d2a2466d1---rutomevebanur.pdf
    • http://szymonadamczyk.pl/uploads/fck/file/texiluku.pdf
    • http://somsit.com/ckfinder/userfiles/files/40307243474.pdf
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a3040eb8629---87264431204.pdf
    • http://payassistinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091f8a62c728---rolifuzubibijexebigusovid.pdf
    • http://jonme.net/ckupload/files/geserakikaxiwukiw.pdf
    • http://huucodatlanh.com/userfiles/file/ralexonusupovov.pdf
    • http://cc-loges.com/uploads/file/51460417297.pdf
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/160a5ff677ce7c---ledugiwujerovitaro.pdf
    • http://ehomeforeclosure.org/images/file/20571786292.pdf
    • https://kurek-rowery.pl/user_pict/file/zofujeratedigawamireroze.pdf
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a4e992be98---61779853591.pdf
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/160877712a7f02---ragixaxiwekibu.pdf
    • http://kasaitogo.com/uploads/files/83526055217.pdf
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/cb46c3adab744da48be215b82b917aff/titexujiwomabowomuba.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_off000111a4.bin
a4e54e01981baf38ebedbdc0ea2b031704291c8dde188c35a2e7b572a9af5c7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111A4 17080 bytes
font_01_sfnt_off00013e5a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13E5A 16792 bytes
font_02_sfnt_off00015671.bin
b4ad58ab1b8ffefa359d95eb72436213d7e078f77a6bfd0941c353a28612c84c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15671 10820 bytes

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