Malicious PDF — malware analysis report

Static analysis result for SHA-256 069575dda0db3e19…

MALICIOUS

PDF

77.6 KB Created: 2021-09-11 19:43:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: affdddee22e72f21c544c52ddf11b99b SHA-1: 2404806335fa04629c6dc40791d40c2beb3f9c99 SHA-256: 069575dda0db3e195ea3f29b27a7294b5f749941015a61e4fa4ec6156acd8afe
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample contains embedded JavaScript, a common technique for executing malicious code within PDFs. It also features a link farm pointing to multiple distinct hosts, many of which appear to be compromised WordPress sites used for hosting PDF files. This suggests an attempt to lure users to potentially malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3747

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134ade643e5b---34968537440.pdf In PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/e4e39bcf2c336298c4a03bea7b18f1be/pukejegozorut.pdfIn PDF document text
    • http://bandenplaats.nl/cmsimages/file/junubejab.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/16138fde72e037---janikudarofodibunakavos.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/84cf9103dbe0d2ce59ab11ae376ecf47/2932972699.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161331e7533ce4---mitotijosijid.pdfIn PDF document text
    • http://trungtamsangloc.vn/uploads/ck_upload/files/ronazetimibowu.pdfIn PDF document text
    • http://valkexclusief.reviews/app/webroot/files/userfiles/files/46356342760.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ebd8806513---69029900833.pdfIn PDF document text
    • http://centrons.com/uploaded/file/72115002361318c2a2306b.pdfIn PDF document text
    • http://sochisushi.nl/survey/userfiles/files/16089210123.pdfIn PDF document text
    • https://graphicart.ro/fckfiles/file/diridanadedulimoxitoxi.pdfIn PDF document text
    • http://ort168.com/upload/ckeditor/files/2123803700.pdfIn PDF document text
    • https://maggievanostrand.com/uploads/media/file/91274498594.pdfIn PDF document text
    • http://alwaysshine.com/fileimage/file/dexepuperuratom.pdfIn PDF document text
    • http://tko.wavedev.net/img/files/files/8817499080.pdfIn PDF document text
    • http://abakus-routing.co.uk/ckfinder/userfiles/files/58373965454.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/16134d1afbe191---76163392073.pdfIn PDF document text
    • http://jeansresource.com/js/ckfinder/userfiles/files/25290969972.pdfIn PDF document text
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/d55ad5c8299d1d697ce86285a571c014/79917083294.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/1613021389b274---93010702681.pdfIn PDF document text
    • https://indiantalentjunction.com/milan/media/wijovixesofizaj.pdfIn PDF document text
    • https://sakkestadbil.no/userfiles/file/5362843288.pdfIn PDF document text
    • http://jiuxingchaoshi.com/uploads/file/081230251625.pdfIn PDF document text
    • http://itkaufmann.com/images/fckimages/file/2579443452.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/nocqgjjrv57rorskuhj25bbj0j/maxataxuzuwogon.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=janibcn+punjabi+movie+2019+chal+mera+putt+2PDF 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_off0000dacc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDACC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f2e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E3 11360 bytes
SHA-256: 43b2928f811d2bf68b795b1ce4f1e58e7feb0fbc0980e696992d2804c78e8884