Malicious PDF — malware analysis report

Static analysis result for SHA-256 2969b0653f318e1a…

MALICIOUS

PDF

72.1 KB Created: 2021-08-25 12:27:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: ac719a57c394567147e3b02797897fb1 SHA-1: 27ba22972b61c6ad84aebf608bbda6e8117a8406 SHA-256: 2969b0653f318e1a0eda55cb6083e44cde78705fc26d131cf050a613ae0215e5
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with several heuristics indicating it functions as a link farm. Some of these links point to compromised WordPress upload directories, suggesting a tactic to host malicious content or phishing pages. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely related to phishing or malware delivery through these links.

Machine Learning

  • Nyx PDF Classifier clean score 0.2283

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://anhbanglaw.com/userfiles/file/nawubora.pdf In PDF document text
    • http://www.johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/56892615091.pdfIn PDF document text
    • https://springkasteelhuren.be/userfiles/file/kexedozukipo.pdfIn PDF document text
    • http://allycatering.com/userfiles/debixinoduzibanu.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/160900a4b0ade5---347567383.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089fe3020be9---65226991217.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/160943cf331380---fafuvitipukopoxemedodime.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a0ce2b02a47---49298279459.pdfIn PDF document text
    • http://dh-cell.net/ckfinder/userfiles/files/tirijudarud.pdfIn PDF document text
    • http://korvet-sp.ru/userfiles/file/gurozoxilugenu.pdfIn PDF document text
    • http://dorinhawear.com/admin/fckeditor/editor/filemanager/connectors/php/fckeditor/editor/filemanager/connectors/php/userfiles/file/80223596315.pdfIn PDF document text
    • http://2017.letnifestiwal.pl/ckfinder/userfiles/files/53723130358.pdfIn PDF document text
    • http://chandigarhdatarecovery.com/files/file/tivadowowosidulituxaje.pdfIn PDF document text
    • http://tcgardening.com/userfiles/file/2021080313070373499.pdfIn PDF document text
    • http://zeci.nl/im/image/58068853612.pdfIn PDF document text
    • http://ydis.kr/userfiles/file/251155535871.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c52bb47a4b1---wufexuxewakosukonamuvagar.pdfIn PDF document text
    • http://www.hermosabeachbungalows.com/userfiles/files/ruvemejijedasupogogirata.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/16530689aa35025af226e5fcfffa8673/melukavumupajafasotudasa.pdfIn PDF document text
    • https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/e053imcgakeaga31ujedgl5dm0/fovuwupo.pdfIn PDF document text
    • http://pronobile.de/catalog/file/pemorenabiketesobad.pdfIn PDF document text
    • http://logo4you.dk/userfiles/file/47631406610.pdfIn PDF document text
    • http://iucecb.com/files/file/wadasiwepasunixu.pdfIn PDF document text
    • http://www.dilipprabhavalkar.com/images/file/43610385720.pdfIn PDF document text
    • http://bydnjl.com/userfiles/files/6939726699.pdfIn PDF document text
    • http://asja-doll.ru/userfiles/file/64163949697.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f5007e6146---tirexifasiwefizot.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=modded+3ds+gamesPDF 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_off0000cbb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBB2 10316 bytes
SHA-256: 5511e78f2ca2e660c2f4324773b6f851d189e1e53b7f70145c49ef868ad19785
font_01_sfnt_off0000e2cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fadf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFADF 16444 bytes
SHA-256: b122ff35ad84e5bf65ad5459dfde31158c522b6396c406358fa9f000dadf3672