Malicious PDF — malware analysis report

Static analysis result for SHA-256 80f2d451773f888b…

MALICIOUS

PDF

82.5 KB Created: 2021-09-15 12:56:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: f01a0ed424a7d221efe8fb37cbf5a989 SHA-1: 3c6b5d2287567dfe65b1960b3ec3b7f824b576e9 SHA-256: 80f2d451773f888b810bc70f141121902562975cc4f6fe418f78ea2d72cbf16c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://pistant.ru/uplcv?utm_term=apk+mod+plants+vs+zombies PDF link annotation
    • https://uangraja.com/contents/files/kadefapevitipifom.pdfIn PDF document text
    • http://cafehinglung.com/uploads/files/25109947704.pdfIn PDF document text
    • http://lejonhund.com/upload/47544133206.pdfIn PDF document text
    • http://elpijisystem.com/file/duzodi.pdfIn PDF document text
    • https://www.borzabadi.com/ckfinder/userfiles/files/lodowafetubasaxipijosu.pdfIn PDF document text
    • http://dohertylaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/87348285124.pdfIn PDF document text
    • http://seidels-mineralienwelt.de/images/uploaded/file/nigorulitukuzasowiketi.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16140905ef1155---mejurinuvafadeju.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/90bbc0ed05c5904a81ea3defaa8f8270/37826700328.pdfIn PDF document text
    • https://yam-token.com/business_school/uploads/file/furoxilozupisaja.pdfIn PDF document text
    • http://club-integra.ru/userfiles/file/66370494962.pdfIn PDF document text
    • http://abcgsgeds.friendship-match.com/upload/files/36897538334.pdfIn PDF document text
    • http://alfatreyd-mebel.ru/archive/images/file/jijorurokunizotusidof.pdfIn PDF document text
    • http://dakmoto.cz/obrazky/file/tesuwifijaxo.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/suxewavotagukibudegoxade.pdfIn PDF document text
    • https://osiindia.org/ckfinder/userfiles/files/vamufu.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/6a68295344a17e99b45615ac9859ed26/44357843417.pdfIn PDF document text
    • http://ardechetendancebrut.fr/userfiles/ardechetendancebrut.fr/file/remomugoduta.pdfIn PDF document text
    • https://cevhertemizlik.com/userfiles/files/zozanuxeditokorexadoviduv.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/a2g00g3c7esa6h5l1aseevcgl1/55643188005.pdfIn PDF document text
    • http://osoboebludo.com/ckfinder/userfiles/files/kuxalu.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613b838c7cb9f---fitudagofowaxemaseku.pdfIn PDF document text
    • https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/6c508ca2cc63d4f3feb49dc21e5a5cae/bigudogixug.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_off0000db17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB17 10792 bytes
SHA-256: 15466feb58dff5bf630eaa45dcdd3322277b4d60e3390611b6cb7d9beb798a6c
font_01_sfnt_off0000f3d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010be3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE3 18796 bytes
SHA-256: f41cae772edb576ad5eeda955b95f72e305d10062f3c9c82237821799711ccca

Open this report in the interactive analyzer, or submit your own file for analysis.