Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b9746bc744c2f0c…

MALICIOUS

PDF

64.0 KB Created: 2021-07-13 06:58:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: d916f0c9ee00d3fd368ff9cbdd31093c SHA-1: 1b8870adafdac47dcd1508d878806c2707686831 SHA-256: 3b9746bc744c2f0c76ff74d41f319d6916b08180fbe4aedb80d1afb9acfd552c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.6902

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://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608699bc1a679---55858767004.pdf In PDF document text
    • http://uci.ir/userfiles/file/buberatawadadubeta.pdfIn PDF document text
    • http://churchtextile.com/userfiles/file/86638955355.pdfIn PDF document text
    • https://alllegaltask.com/wp-content/plugins/super-forms/uploads/php/files/id48vbpsl19n8bo1phbrfk228u/vanemizinudo.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/1608b3c33f025b---gisibipedotis.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/4sd4fpjp8jfs7afv590v47k9he/17077964182.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/1a968625c50eae003354650f06c2b244/99761675764.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609d420e796a1---likij.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/9360e57c22fbc3beddd0fbd21d5f1dfe/mamigaxajovi.pdfIn PDF document text
    • http://www.naraihillgolf.com/admin/userfiles/file/zimakefibor.pdfIn PDF document text
    • http://firewheels.pe/userfiles/file/14574349765.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160b0e28873184---mejusu.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/e1c344b1801513c2e162ab262ea3d8c3/5704206658.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6aaa38024e---18950844047.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160746172e5022---64458911029.pdfIn PDF document text
    • http://scro.ru/pic/file/62435590050.pdfIn PDF document text
    • https://aftaplan.com/works/peepsparty/html/upload_files/file/72995208537.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/1855eadf12636ed795776e9069cab250/belofatikekitepilijodipo.pdfIn PDF document text
    • http://aep-tc.com/cache/fck_files/file/30724035411.pdfIn PDF document text
    • http://massimobertoarchitetto.com/userfiles/files/11925366832.pdfIn PDF document text
    • https://masukpt2.com/contents//files/lupejaxuwofupemo.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4c5f0a0351---70679021937.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/ec010bec34aaee626ef32a8cde436ed5/zaxij.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=academy+uniforms+limitedPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c95b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC95B 17796 bytes
SHA-256: 1809bf232446c174cac6e3ef7f28d912e39f8042ae84125b11a92729c7434c1d

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