Malicious PDF — malware analysis report

Static analysis result for SHA-256 e626b9b6dc362e9b…

MALICIOUS

PDF

91.8 KB Created: 2021-08-13 04:50:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-07
MD5: 6aca2fbca75513d4bc42d0efec15f405 SHA-1: 7e4bd8f28762a97edeae5ec9b17dbd46247abe52 SHA-256: e626b9b6dc362e9bb80e0db5135670d6f668586cfcf5d0691df35e017aa453a5
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is a PDF identified by ClamAV as a phishing trojan. It functions as a link farm, containing numerous URLs that point to various websites, some of which are hosted on compromised WordPress installations. This suggests an attempt to lure users to malicious sites for phishing or further exploitation.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3832

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 http://metallpress.info/files/lititezaxajux.pdf In PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/160e02c8de75c1---83738807818.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160f7e77a0b168---95954792739.pdfIn PDF document text
    • http://snap-drone.com/userfiles/file/latixitaninej.pdfIn PDF document text
    • http://the-bom.kr/upfile/files/57468909958.pdfIn PDF document text
    • https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/5114b7395c2c8cde252953d5ec451d0c/falowibozuruvoxina.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/ge7flrnfh6gedgc4he64fsm5ma/rubemofeba.pdfIn PDF document text
    • http://kotolantopeni.cz/file/33653590569.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fbf7a9a33d---bibogewewoxosuza.pdfIn PDF document text
    • http://lalinpress.com/ckfinder/userfiles/files/zolideporufodekabifixudos.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a957e717866---kesanobojufakogugo.pdfIn PDF document text
    • http://travelport.pl/userfiles//file/8131184453.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/8f1b8d5b594e8075e3c8b3f9c1330c21/zagozak.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cf4459fcf0---90795619385.pdfIn PDF document text
    • http://boletin.alicantehosteleria.com/lib/ckfinder/userfiles/files/57801861550.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a3dd1d218eb---xogapavunilewidigafa.pdfIn PDF document text
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/s75k1miebplsou1gb15g6gnvqa/74868636339.pdfIn PDF document text
    • http://dok-vo.ru/userfiles/file/jejavu.pdfIn PDF document text
    • http://ankaser.com/userfiles/file/35946699559.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db778d8ee14---50858738456.pdfIn PDF document text
    • https://calmoinc.com/upload/editor/file/89682957626.pdfIn PDF document text
    • http://geoodwierty.pl/files/file/sobenijebumif.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b20f105c720---84980187715.pdfIn PDF document text
    • https://ebooksweb.net/files/file/supolefanonig.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=convert+pdf+to+vsdxPDF 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_off00011599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11599 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012dab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DAB 17396 bytes
SHA-256: ee07a747c4b16bbd059520e7f71941ed0f6c9d8b3d116491e5697968d41f341c
font_02_sfnt_off00015b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B2B 10392 bytes
SHA-256: 3911c12e12d6a474b5bf7ba26ad2dd0bf109617f555f7fc52c22e217d1e132ab