Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c07abcb4556a26e…

MALICIOUS

PDF

67.8 KB Created: 2021-09-30 15:57:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 02a79574d483ccd4142f232f542fab24 SHA-1: 38a1cd1bed80d81af5004ddf739f0901614dbba3 SHA-256: 3c07abcb4556a26e4e91c00c41149a9d84b6998bfb719904f7a7f860ee1df25b
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as a phishing lure due to its image-only nature and embedded clickable action. It contains numerous links to potentially malicious domains, suggesting it's part of a link farm designed to distribute further payloads or lead to phishing sites. The ClamAV detection and ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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
  • 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 67 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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
  • 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 https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/f466af5ee4a17c6f1952549c7b5cc374/10528196404.pdf In PDF document text
    • https://zdravka.hlpr.hr/userfiles/file/pumalunidoripusanoxadabix.pdfIn PDF document text
    • http://aallergy.friend-match.com/upload/files/80218340068.pdfIn PDF document text
    • http://specialcats.nl/media/files/fejesepub.pdfIn PDF document text
    • http://3234.us/data/attachment/file/xinefizexogazovemaligusa.pdfIn PDF document text
    • http://redactron.com/userfiles/file/87993277074.pdfIn PDF document text
    • http://neurooperations.com/ckfinder/userfiles/files/16476542709.pdfIn PDF document text
    • https://www.hkfew.org.hk/ckfinder/userfiles/files/kulelodumibowonetap.pdfIn PDF document text
    • http://sungwoo-n.com/userfiles/file/wufixabegove.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f6cb0e0157---49888482389.pdfIn PDF document text
    • http://congluc.com/upload/files/nafotexi.pdfIn PDF document text
    • https://accounting789.com/ThImg/file/35691530046.pdfIn PDF document text
    • http://aow.infogestnet.it/ckfinder/userfiles/files/45804737869.pdfIn PDF document text
    • http://ficfart.org/userfiles/file/65572073101.pdfIn PDF document text
    • https://henuopack.com/d/files/biwubowevanemasudine.pdfIn PDF document text
    • http://waetsukai.jp/system/ckfinder/userfiles/files/rukumukivubele.pdfIn PDF document text
    • https://aymexco.eu/ckfinder/userfiles/files/vijoxorugi.pdfIn PDF document text
    • https://idd.no/ckfinder/userfiles/files/83325060033.pdfIn PDF document text
    • https://mrdak.cc/uploadfile/files/65582031334.pdfIn PDF document text
    • http://www.salac.cz/ckfinder/userfiles/files/jubidofe.pdfIn PDF document text
    • http://ktcz.eu/files/files/41863808789.pdfIn PDF document text
    • http://sevoir.hu/uploads/file/bifonodafaluwiwovora.pdfIn PDF document text
    • https://crownprolaw.com/userfiles/Proj_Name/files/dedamuzikejus.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=virtual+families+lite+mod+apkPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ad94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD94 10716 bytes
SHA-256: d16aeb23baf7965356fa66c5c8608b79a99267c3c8ba09e08111297f3546ed27
font_01_sfnt_off0000c641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC641 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000de53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE53 14136 bytes
SHA-256: 295c6fc7827ab7b192e86a32a1bbabb9c77fcab876dfad84e50f546f3b4791c0

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