Malicious PDF — malware analysis report

Static analysis result for SHA-256 e895df54e6052da0…

MALICIOUS

PDF

62.8 KB Created: 2021-09-27 12:11:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 29c5d4a3dbea4641e095691cd0775da6 SHA-1: a61ed9a6c962690850ea62d00fd2fbdab0bc4a88 SHA-256: e895df54e6052da04bcb20222661519a10722b1ef638c4842acae7fa758c6b1d
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, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs that point to compromised websites and potentially disposable hosting. These links are likely used to redirect users to phishing pages or download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5956

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 https://huntic.ru/uplcv?utm_term=racing+miku+tony+haregi+ver PDF link annotation
    • http://joelcsimonesq.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/saxuro.pdfIn PDF document text
    • http://romento.com/uploaded_files/userfiles/files/lipadubifotewo.pdfIn PDF document text
    • http://graylegalservices.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/37488317643.pdfIn PDF document text
    • https://dcmheavyequipment.com/admin/images/file/zawokupazonufafelugo.pdfIn PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/rt01cq860b5s13go5nq02rcalm/17500337049.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/d86832e03092b938d2372509353f8185/3593912814.pdfIn PDF document text
    • http://www.iece.in/userfiles/file/vevirijojorebedavodebi.pdfIn PDF document text
    • http://mathrainbow.com/userfiles/file/56087214148.pdfIn PDF document text
    • http://zechnerbau.at/images/content/files/33627856906.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/452423246.pdfIn PDF document text
    • https://soechi.net/userfiles/file/zodofor.pdfIn PDF document text
    • https://rivieresoceanie.com/ckfinder/userfiles/files/jewofakunenipufeguditaw.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/27b9b456cd587858dd1e8ad5545080aa/96074369000.pdfIn PDF document text
    • http://rlponder.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/10801851792.pdfIn PDF document text
    • http://chochosanencino.com/uploads/files/lelevawejoseturesuzuwiwol.pdfIn PDF document text
    • https://gonguyenkhoi.vn/upload/files/94602694875.pdfIn PDF document text
    • https://zegaoyun.com/calisma2/files/uploads/megin.pdfIn PDF document text
    • http://atthaya.com/file_media/file_image/file/tujujifa.pdfIn PDF document text
    • http://www.jysunshine-hotel.com/up_files/file/wuvubezitebexosibavemun.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/cf72ae120cdfbf4cbce3da9e63515be2/folamakomi.pdfIn PDF document text
    • http://zawodydrwali.pl/app/webroot/userfiles/file/24804917273.pdfIn PDF document text
    • http://www.workbythai.com/admin/assets/images/72761379968.pdfIn PDF document text
    • http://tinhdauvietnam.vn/upload/files/66189207488.pdfIn PDF document text
    • http://gpba.ge/admin/ckeditor/ckfinder/userfiles/files/6694988094.pdfIn PDF document text
    • 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_off0000b5b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5B0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cdc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDC7 10880 bytes
SHA-256: e0fd88eb0d97d84aca3a776b46d4ec206d81cd90405d87c1e927c8fcbd861d5d