Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bd6e48f05305783…

MALICIOUS

PDF

78.1 KB Created: 2021-08-24 10:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 57cf6ef66d125767cbd34065e23b8867 SHA-1: 16dc4805dad4f6850c12df622fc7e58f98a54559 SHA-256: 4bd6e48f053057834317ebddadc379f4b98e1ff07aaaf87b6b8ed65810d5f636
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a link farm designed to redirect users. The presence of these links indicates an attempt to direct users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7833

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://alwaysfavorentertainment.com/clients/879371/File/69712644029.pdf In PDF document text
    • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16121aa2961b86---8555815233.pdfIn PDF document text
    • https://gagiongvitgiong.com/ckfinder/userfiles/files/xupowufeposekebegodat.pdfIn PDF document text
    • http://cerescommoditiesltd.com/Images_upload/files/kijevuber.pdfIn PDF document text
    • http://mea-travel.pl/userfiles/file/61837901551.pdfIn PDF document text
    • https://polresseluma.com/assets/ckfinder/core/connector/php/uploads/files/7434270857.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f52f9aa719---lajuwejonal.pdfIn PDF document text
    • http://imi.vc/upload/files/5924627261.pdfIn PDF document text
    • https://freshchannels.com/home/sites/freshchannels/public_html/ckfinder/userfiles/files/60140061405.pdfIn PDF document text
    • https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/755b967cb30f02515d7fde952732edad/juzerepaxusokonijudik.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3b0061ef5d---difateseditevisasujovave.pdfIn PDF document text
    • https://arerp.kr/data/file///rajaseluboj.pdfIn PDF document text
    • http://stellarvvv.ru/ckfinder/userfiles/files/92901147807.pdfIn PDF document text
    • http://anneadamslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/33569884515.pdfIn PDF document text
    • http://exito-opakowania.pl/userfiles/file/55778902379.pdfIn PDF document text
    • http://midlandhigh79.com/clients/866549/File/gexitotufog.pdfIn PDF document text
    • http://stroi-sistema.ru/img/nawibokevim.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/89715688967.pdfIn PDF document text
    • https://ruxthai.com/ckfinder/userfiles/files/taxovoguripuwuwolutip.pdfIn PDF document text
    • https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/471106e0f01dc3f110851610909b8957/52987429841.pdfIn PDF document text
    • http://commandhousecreations.com/uploads/files/82773906880.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/11c462732262d66699821fdeffe7eb5e/64511426101.pdfIn PDF document text
    • http://kiiga.ru/userfiles/file/66845972513.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/16082da6e4ebbd---74345712805.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611493c89a58e---65440967658.pdfIn PDF document text
    • http://abwalabamaave.com/uploads/files/41952762486.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=bloodborne+daughter+of+the+cosmosPDF link annotation
    • 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_off0000fdf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11605 2172 bytes
SHA-256: a616260185f67720568f622a0ad01269211e62d529fbdd8c4b9a814693ca407f
font_02_sfnt_off00011fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FD9 11124 bytes
SHA-256: 3903f1be6d30d4c0d3825afd840264326b3ed0b46b0fa7110a18560e73c1cc1e