Malicious PDF — malware analysis report

Static analysis result for SHA-256 6480b10914608a98…

MALICIOUS

PDF

79.6 KB Created: 2021-07-16 07:35:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: d56a88b071ce10eea3cb29b934b86152 SHA-1: 49e191f539d4f1cd4c3001e0672518fd3352ce53 SHA-256: 6480b10914608a9800daf3331a70894bf4e0821e3a24daebca8b0de750d74a5d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file functions as a link farm, containing numerous URLs that redirect to compromised WordPress sites. The primary purpose appears to be directing users to potentially malicious content hosted on these sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6642

Heuristics 5

  • 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
  • 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://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/a847eba466d65cf894b62d3a132f7e84/90350080639.pdf In PDF document text
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/k0nr2vffdpucvi3ca7tg7uc08v/68398866576.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160c1f05d4e522---51194761422.pdfIn PDF document text
    • http://weberstellen.ch/userfiles/file/8208286542.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bb1451fe02---kopotoxikapuzor.pdfIn PDF document text
    • http://leebyunghun.kr/new/upload/board/files/7832301492.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16073e90129115---5203075370.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/1c5a5c6b3a40bcf11e18bf609a0c510e/kavitamorat.pdfIn PDF document text
    • http://myphamasia.net/upload/files/22761919526.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/6c0ef0a2d5d0b5553a6fad412b2a7eac/25367056639.pdfIn PDF document text
    • http://middlegeorgiacoinclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079737d724ed---36652427673.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608885f82d54c---33927576762.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/8cagqfm8hkb76v9j6j7cbgjeos/35583596455.pdfIn PDF document text
    • https://art-gallery.mn/uploads/files/10199759858.pdfIn PDF document text
    • http://lisaarkin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/75485851203.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a7cd7875164---zosenevetavemopixa.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/33027739658.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160917e5170aba---kanidutipusamol.pdfIn PDF document text
    • https://medgarlci.com/wp-content/plugins/super-forms/uploads/php/files/051ace8de7f225e2ad2f315abb417b30/25794521851.pdfIn PDF document text
    • https://tauthuy.vn/upload/files/xikibufirivo.pdfIn PDF document text
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/1eppau4jagut1cclq6od9f377d/40153703160.pdfIn PDF document text
    • https://efficimm.fr/userfiles/files/83613469687.pdfIn PDF document text
    • https://sikanderajam.com/Robinson/ckfinder/userfiles/files/83880970013.pdfIn PDF document text
    • https://schmitz.cz/res/file/62169437269.pdfIn PDF document text
    • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/b9a3d1e041ad800c80f6600e16dc6495/vamunogodexelerideb.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=scream+shout+let+it+all+out+lyricsPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/indexIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00012b53.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12B53 10612 bytes
SHA-256: 6eaabc44012a3ce3b98e28e226904c8ad756b8a88c6a326c893352a38e5ec7aa
font_00_sfnt_off0000dce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f4fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FB 18232 bytes
SHA-256: daa3b39efd98be5393b4bd75824d1df9d078ff12743f2b78c88a83565654ae7d
font_02_sfnt_off0001231e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1231E 1732 bytes
SHA-256: 5b3c947262022625ef2d4cfb2d0fa10a94f23c97611fd4c7364bfcc62a76ce6a

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