Malicious PDF — malware analysis report

Static analysis result for SHA-256 a95ee137cd050c75…

MALICIOUS

PDF

75.1 KB Created: 2021-09-06 02:10:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 16d26d1eccc1aa5dfdbea718a7cada48 SHA-1: d571236302427f37c322d5a6a71a3f919a583d25 SHA-256: a95ee137cd050c75e5cdc6b8cfa1846da19215bd18bd1aad5fce824a7db375e4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised WordPress upload directories and other disposable hosting sites, suggesting an attempt to distribute malicious content or phish users. The presence of embedded URLs and the nature of the heuristic firings indicate a likely spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7671

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f01c0487d1---fakajedanu.pdf In PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/32qk4fnqllmtp2scae33c56aa0/pukavupe.pdfIn PDF document text
    • https://fasleh.net/Files/files/44934092602.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/5f0f93497545951011b06aaeed5af27a/25024896282.pdfIn PDF document text
    • https://cakesandcupcakes.net/userfiles/files/wowasekonaropigonizoju.pdfIn PDF document text
    • http://delve-cr.com/uploads/75008342660.pdfIn PDF document text
    • http://schokozentrale.de/idata/13303577800.pdfIn PDF document text
    • http://smithmaloney.com/clients/3/32/32eae1a42220421eddab78da2f55685d/File/tibevisujesud.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b263394b37---tisijujomanujipagezodafap.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/9cd1dd2b008d37d840b84befc8fe4269/puzizavewomot.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609608ebcf55b---rilaxozitoluvupilixupu.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/89d983558b6c22386948dbf6c03fe5a9/womikisobugotaver.pdfIn PDF document text
    • http://simpli.ie/survey/userfiles/files/wotokufek.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb5ddd64b32.pdfIn PDF document text
    • http://jgbt.us/pds/userfiles/files/xejaxupil.pdfIn PDF document text
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/d062cjmcbaj7tur3egkh8bmus3/radugusikepu.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16120d581d705b---10901311182.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c6ab7a4ffa---jimuwakisanewodifozaje.pdfIn PDF document text
    • http://solentpodiatry.com/jackvl940/web/content/images_uploaded/file/sagugulemaro.pdfIn PDF document text
    • https://penzionradvanice.cz/res/file/15594157034.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/28100826766.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=controversies+in+psychology+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE453 10948 bytes
SHA-256: e8976549b809907b9e7a241f336d81423ca30d6d8359f613a0747fc1cec18893
font_01_sfnt_off0000fd83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD83 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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