Malicious PDF — malware analysis report

Static analysis result for SHA-256 62b7c84e48b9b514…

MALICIOUS

PDF

85.0 KB Created: 2021-09-11 08:08:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a43b59b977bc4bff96ddc5b664a29371 SHA-1: 960c186ea364a55186f9c43f9f852d061de7fb18 SHA-256: 62b7c84e48b9b5143cbce5fab2ec18e8fda84c91ea80092bf1629aeec477b2f3
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The critical 'SE_SECRET_RECOVERY_LURE' heuristic strongly suggests the document's purpose is to trick users into revealing recovery secrets or private keys. The presence of numerous embedded URLs, many hosted on compromised or disposable domains, further supports a phishing or scamming operation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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
  • 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://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/161346d06b159c---17999831089.pdf In PDF document text
    • https://steklo-shik.ru/userfiles/file/82040494682.pdfIn PDF document text
    • http://perles-del-beya.com/userfiles/file/nutugomunedewifil.pdfIn PDF document text
    • http://grapes4u.ca/sites/all/sites/grapes4u.ca/files/40082370313.pdfIn PDF document text
    • http://efrex.cz/files/file/54477413685.pdfIn PDF document text
    • https://clinicamanila.com/ckfinder/userfiles/files/83633197449.pdfIn PDF document text
    • http://bbfederico2.net/userfiles/file/jerujalezo.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/eba2a18444b7b1f1e88b80e8ab5dcb2d/28791652136.pdfIn PDF document text
    • http://atlonnuri.org/UpLoadImage/editer/files/84007605126.pdfIn PDF document text
    • http://studiomarazzi.eu/userfiles/files/lepafajosane.pdfIn PDF document text
    • http://c2ctrading.org/cms_upload/files/pojukuse.pdfIn PDF document text
    • http://xn----7sbabaajmdfbk3ddf3azka3b6a2r.xn--p1ai/ckfinder/userfiles/files/12370080569.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/1048cde0d2ee168014ca0026fdedd462/34894937726.pdfIn PDF document text
    • https://jasmijnbloemengroen.nl/userfiles/file/46500957211.pdfIn PDF document text
    • http://dgjinhak.kr/DATA/upload/files/202109070627185180.pdfIn PDF document text
    • https://atamergranit.com/userfiles/file/66174012290.pdfIn PDF document text
    • http://hbaoge.com/upload/files/nepowilawukusoga.pdfIn PDF document text
    • http://mgrima.com/files/file/15770949052.pdfIn PDF document text
    • http://sanga.asia/userData/board/file/zowajexokukafizumabamij.pdfIn PDF document text
    • https://carlojans.com/cms/file/19191058904.pdfIn PDF document text
    • https://livewireeventz.com/userfiles/file/pepekulemadikiv.pdfIn PDF document text
    • http://xn--sanitrprofi-p8a.ch/fckeditor/editor/images/file/89887662393.pdfIn PDF document text
    • http://phamtrangia.com/upload/files/naxazelitefusotikepejowo.pdfIn PDF document text
    • http://pusancard.com/userData/board/file/gupobamolo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=android+studio+proguard+mapping+filePDF 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_off0000e686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE686 10924 bytes
SHA-256: 6a402044d487625854a9c61fa9228ad6920c97393a2c077828908792bcdf2a1d
font_01_sfnt_off0000ffa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000117b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117B5 17812 bytes
SHA-256: 1686107ce1379fdfddd4c3d201dbf0f751cafe913531e87f5eb95112f6a5a402

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