Malicious PDF — malware analysis report

Static analysis result for SHA-256 66e380bd41af96b0…

MALICIOUS

PDF

65.1 KB Created: 2021-09-28 21:48:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: b8e441d6f646e43e120aa88538ce4b50 SHA-1: 9d1fea589d1ca8adee5df5a2a50a0a93f250536f SHA-256: 66e380bd41af96b0372a110507b8a1bb549067a66c6a597b1b6e8653a847dc35
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document is identified as a phishing lure due to its small size and image-only content, designed to trick users into clicking embedded links. The links lead to a farm of compromised websites, suggesting a distribution point for malicious content or phishing pages. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5271

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 65 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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=pokemon+mega+emerald+xy+gba PDF link annotation
    • https://atrax.hr/files/62696644165.pdfIn PDF document text
    • https://moscreen.in/cmsfiles/file/16207572311.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/3456a6cb43f379cee16579d01dc8156a/vodotumusufutuvigasezizag.pdfIn PDF document text
    • http://www.barbazan-debat.fr/ckfinder/userfiles/files/rumemobivugupur.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/57499b903bd903db2fa3be2528f69b99/sedetafikubop.pdfIn PDF document text
    • https://avistravel.activsport.ro/userfiles/file/3237014603.pdfIn PDF document text
    • https://ketex.com/trcgp/ckfinder/userfiles/files/74956474486.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/e6a9ebcd1f863f239ffa24d91f7119f7/vudovumoluzimufunawilavur.pdfIn PDF document text
    • http://holzweiss.at/lozixomawopimexiwulamoda.pdfIn PDF document text
    • https://ytdrive.com/CKEdit/upload/files/58527355483.pdfIn PDF document text
    • http://fedime.org/imagenes/14666803785.pdfIn PDF document text
    • http://hichipper.com/hichipper/uploadfile/file/2021091620234373499.pdfIn PDF document text
    • http://instant-image.net/UserFiles/Site/File/19246363242.pdfIn PDF document text
    • http://xn--hh0b97d8is16e.com/userData/board/file/kabaxewololu.pdfIn PDF document text
    • http://npas.ru/pic/file/papogof.pdfIn PDF document text
    • http://twtipa.com/upfile/files/2021/09/09/38545326351.pdfIn PDF document text
    • http://bishnutoursandtravels.in/userfiles/file/47789092451.pdfIn PDF document text
    • http://gibisch.org/files/files/39386036288.pdfIn PDF document text
    • http://solarwindependence.com/ckfinder/userfiles/files/sokugisubogofogumi.pdfIn PDF document text
    • https://qcbusa.barettis.com/userfiles/file/kowikifij.pdfIn PDF document text
    • http://cameranichietsu.com/luutru/files/44039083602.pdfIn PDF document text
    • https://studybrilliant.online/app/webroot/img/userfiles/file/15886717150.pdfIn PDF document text
    • http://leeclinic.kr/userData/board/file/nawofolu.pdfIn PDF document text
    • http://inbeeldt.nl/userfiles/file/3194721781.pdfIn PDF document text
    • http://ahxxzx.com/userfiles/202109/file/lagijususegomikar.pdfIn PDF document text
    • 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_off0000b39a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB39A 13936 bytes
SHA-256: 24b63a8490a7a396cbddeec23b4129bc54c4e343ef5a12adce0d71a05996d2ca
font_01_sfnt_off0000d5df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5DF 10684 bytes
SHA-256: ca8d2d29bb6d0d130a54c46f62f15086c7f92c3d66016a55434d13080e44de43
font_02_sfnt_off0000ee2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1