Malicious PDF — malware analysis report

Static analysis result for SHA-256 f56f192776a2906a…

MALICIOUS

PDF

72.1 KB Created: 2021-06-16 10:34:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 172e89ad0b19f3426d12ba26ba2e0acd SHA-1: c1286a68018c40b950127227a06eb74477567568 SHA-256: f56f192776a2906a4b39d10b31f2704a9c2deec1954b00bcff39ad2e4e103668
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links to external websites, many of which are hosted on disposable domains and employ SEO tactics to appear legitimate, such as offering free downloads. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to trick users into downloading further malware or engaging in phishing activities. No scripts were extracted, but the overall structure and URL patterns are consistent with phishing and malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9791

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://philabc.ru/uplcv?utm_term=malayalam+catholic+devotional+songs+mp3+free+download PDF link annotation
    • https://advance-pack.com/editor_upload/file/2202319321.pdfIn PDF document text
    • https://theelementrama9.com/userfiles/files/lodevajaraka.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608eeb8e9cff3---2865955110.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c650b7a347e---tufupolubi.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/b758476e4b27cbd295913192f4c3ddd7/vuvorujenetenadinunuxamo.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/80e65db08c5d6b5a30c4fa52c2502765/91055514913.pdfIn PDF document text
    • http://abacusnancy.com/userfiles/file/78685783949.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/hn4e5o2pigsma6526756036vv2/mevorizilit.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/e2250fc387d98afaea7e6cae8015bfc7/8485187227.pdfIn PDF document text
    • https://www.latentoac.com/portal/wp-content/plugins/super-forms/uploads/php/files/ekcafmfbtq14322erovs71si29/dalonotexawo.pdfIn PDF document text
    • http://aimic.com/userfiles/file/93776637536.pdfIn PDF document text
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b42a3fa8b43---3386607693.pdfIn PDF document text
    • https://capital-tic.com/upload/ckfinder_temp/files/20210603083802.pdfIn PDF document text
    • https://xanbiente.de/userfiles/file/57880027516.pdfIn PDF document text
    • http://dianacb.cz/userfiles/file/wikowukufobosuvilupib.pdfIn PDF document text
    • http://fine-cottage.ru/userfiles/file/20702838524.pdfIn PDF document text
    • https://www.alphaveneers.com/wp-content/plugins/super-forms/uploads/php/files/5614cdcb4fdd643ba4210eef54671d17/lonegujiruminibot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA49 5992 bytes
SHA-256: 3b7337b19aedffb8a59cd5b21b74734513331adda471606b0811d163806077c1
font_01_sfnt_off0000feb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEB5 10292 bytes
SHA-256: ad7a637a3fcec74f1131833237ae25f1c038042e9a676e10bf84980bdcc920c8

Open this report in the interactive analyzer, or submit your own file for analysis.