Malicious PDF — malware analysis report

Static analysis result for SHA-256 74e2a9c882298d06…

MALICIOUS

PDF

70.0 KB Created: 2021-09-11 12:47:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 51d83593ece811b361ead0e730808111 SHA-1: 191fb1bfbe167a331cfe9990370e8870d77b9822 SHA-256: 74e2a9c882298d06e1ace9a09ec6385905d71a69c738d283dd13311e9d29603c
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to disposable domains and are part of a link farm. This suggests the document's primary purpose is to redirect users to potentially malicious content, likely a phishing page or a download site for further malware. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://spodne-pradlo-2bpoint.sk/UserFiles/File/wepefesamizezikavofawuwu.pdf In PDF document text
    • https://tempegaring.com/contents/files/bidifilima.pdfIn PDF document text
    • https://advik.net/userfiles/file/30219838220.pdfIn PDF document text
    • http://archbot.pl/files/file/32471755455.pdfIn PDF document text
    • http://lianbang123.com/uploads/files/202109072007512895.pdfIn PDF document text
    • http://uat2.hkha.com.hk/ckfinder/userfiles/files/ropejitefimudifunawo.pdfIn PDF document text
    • http://surausa.com/uploads/files/83461240122.pdfIn PDF document text
    • https://edarky.net/data/file/malukajavijozopevojaxu.pdfIn PDF document text
    • http://www.deep2001.com/images/library/File/37112690719.pdfIn PDF document text
    • http://droneducational.com/admin/userfiles/file/migewojoligekobux.pdfIn PDF document text
    • https://loyd.rs/images/file/81044981282.pdfIn PDF document text
    • http://bursaceyizgelinlik.com/images_upload/files/samifovosizadi.pdfIn PDF document text
    • http://kotolantopeni.cz/file/zidijik.pdfIn PDF document text
    • http://ngor2-3.com/file_media/file_image/file/58730918447.pdfIn PDF document text
    • http://fcraregistration.com/UploadedData/file/jitefowozaw.pdfIn PDF document text
    • https://ahirealty.in/admin/userfiles/files/luvilekegafaguvipiv.pdfIn PDF document text
    • https://www.sibirprokat.ru/ckfinder/userfiles/files/31730222576.pdfIn PDF document text
    • https://jecoexports.com/ckfinder/userfiles/files/gofixedo.pdfIn PDF document text
    • http://myapartment.de/web/editor/files/89930235567.pdfIn PDF document text
    • http://www.scsk12.org/policy/files/files/61198935850.pdfIn PDF document text
    • http://mtt-association.fr/upload/file/valugeregadeg.pdfIn PDF document text
    • http://w3-japan.com/js/upload/files/pezuba.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=how+to+recover+phone+data+after+factory+resetPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB233 10836 bytes
SHA-256: 63045da61972143bae535f2c1a39c55af8bf64ccbaae281d13ae3b3d74067d4c
font_01_sfnt_off0000cb36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB36 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE348 15368 bytes
SHA-256: 8cb761173d8cadaba907e555ad4ea794fcf8c95a6a1a56449c52890c61932aa6

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