Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eddae6183b9abe6…

MALICIOUS

PDF

77.3 KB Created: 2021-09-03 22:55:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 3b877ab9d4d6fba440af023b36f01a93 SHA-1: 9d00b08b491dd36ce8cf5eb706c9b0d7bf8dc9b4 SHA-256: 2eddae6183b9abe63be472f532ff40d7eb989d2a81ecbf84423c403072534080
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious. It contains a large number of links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to phishing or malware distribution sites. No scripts were extracted, but the presence of numerous external URIs indicates a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://smidgel.ru/uplcv?utm_term=futuro+simple+espa%C3%B1ol+pdf PDF link annotation
    • https://oteaexpert.fr/cite_imgs/file/besenamu.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160b9c579c8dc5---55092490682.pdfIn PDF document text
    • https://sharjahcements.com/images/bulk_images/files/ruzezewotojib.pdfIn PDF document text
    • http://phutungvespaco.com/luutru/files/78620742353.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607271a9f18cb---xitodo.pdfIn PDF document text
    • https://mmszke.hu/files/file/31908879435.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/594sbueaeu3ojv2ktgd0kfo5kj/bomed.pdfIn PDF document text
    • http://jungvassar.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/12527776539.pdfIn PDF document text
    • https://razvozka24.ru/wp-content/plugins/super-forms/uploads/php/files/a4b95442a68588ed6d5230c710fa3622/6249184983.pdfIn PDF document text
    • https://xn--pssa17sw71b.tw/upimages/files/73601119925.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/a535ec19debce14397f270d5a997ad2a/78533275615.pdfIn PDF document text
    • http://babywagen24.de/userfiles/file/vexebekuforetav.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/3cth83kdmfpmthv29iasmtkn82/lavem.pdfIn PDF document text
    • https://confidence-ist.com/ckfinder/userfiles/files/tuperexekujupegomapuge.pdfIn PDF document text
    • http://viswinkelindex.nl/images/uploads/fufegemuzex.pdfIn PDF document text
    • http://woodsfamilypride.org/clients/2/2c/2c83419adcf4927d74d3defe18342386/File/modugomejagadumiputobe.pdfIn PDF document text
    • http://lacasedescaraibes.fr/file/47817788560.pdfIn PDF document text
    • http://www.kickcommerce.com/userfiles/file/13864072009.pdfIn PDF document text
    • https://carrieres-pierre.com/userfiles/file/98289170500.pdfIn PDF document text
    • http://aquinasnb68.com/clients/9/9b/9b9a52ed12f3b440fa02b6ce64642487/File/suzunoje.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/ranigaj.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608b699b73b45---kavuzonisokemuxofulagik.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/u3djtqdqbeuvuhjqdf2nm6879l/kapesaberozajekoferar.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c1e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1E4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FB 10836 bytes
SHA-256: 2dfc1d639e9e34403dd10da3b74723daa5e790ab26410f28f5f8465445814a60
font_02_sfnt_off0000f2ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EA 19840 bytes
SHA-256: be3190cce95969e00b1ee5ee0d54c89fc641e591b5f76444cd390cd43a749152

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