Malicious PDF — malware analysis report

Static analysis result for SHA-256 2206aa29b4ea7c3a…

MALICIOUS

PDF

80.7 KB Created: 2021-09-17 09:31:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 7aae995a3ef95851b9cff439c4f6be51 SHA-1: d629883e20548241bc7d70e60bfc1d92ec51fd69 SHA-256: 2206aa29b4ea7c3ac28ff28fc3ec6dbd7c970b91bf53575e3e28340065f13f0d
164 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which are hosted on compromised WordPress sites or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for exploiting PDF vulnerabilities or initiating malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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
  • 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.
  • 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 https://archism.ru/uplcv?utm_term=handy+pick+app+download+apk PDF link annotation
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/d013c92ffb3dfbafd41d0470024580ef/petanijirigapineziluwu.pdfIn PDF document text
    • http://www.biharikft.hu/bihari-admin/ckfinder/userfiles/files/xawikus.pdfIn PDF document text
    • http://beverly.kopanramen.com/uploads/files/romalopavitiw.pdfIn PDF document text
    • http://h04ydivan.ru/userfiles/file/zapepol.pdfIn PDF document text
    • https://pilot-nav.com/ckfinder/userfiles/files/44910171509.pdfIn PDF document text
    • http://saveondealz.com/ckeditor/ckfinder/core/connector/php/uploads/files/63492124302.pdfIn PDF document text
    • http://www.msjcongregation.org/www/js/ckfinder/userfiles/files/votedoxiserekor.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/hpkcahh86tmcr6fqdasqstpn7i/luruzemekifunor.pdfIn PDF document text
    • http://cellesekorea.com/ckupload/files/gajakit.pdfIn PDF document text
    • http://garantc.ru/userfiles/file/golezivufa.pdfIn PDF document text
    • http://doanekeyes.com/userfiles/docs/dazabominolegesumexowo.pdfIn PDF document text
    • http://bantinnhadat.com/users/files/8013377170.pdfIn PDF document text
    • https://isleo.com/i_photos/file/13426641710.pdfIn PDF document text
    • http://www.gonouvellezelande.com/files/66270375303.pdfIn PDF document text
    • http://sb-78.ru/files/file/58263773929.pdfIn PDF document text
    • http://anhbanglaw.com/userfiles/file/kusubefazatojozapeke.pdfIn PDF document text
    • http://phutunggiahungoto.com/uploads/files/19515139821.pdfIn PDF document text
    • http://www.synagoge-stommeln.de/ckfinder/userfiles/files/tapadof.pdfIn PDF document text
    • https://connatlas.com/home/conn/public_html/ckfinder/userfiles/files/dafilusesagefibawijirowux.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/161356e746a395---20326882641.pdfIn PDF document text
    • https://tjpapigroup3.com/contents/files/timavisepokizekafetibuxa.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/161324b5fad518---81500861691.pdfIn PDF document text
    • 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_off0000d798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD798 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000efaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAF 10292 bytes
SHA-256: 5a8fa6d95d7cb4c685d1356fd57aadd478239dc6c05822ff7e6f5386eb49c5f7
font_02_sfnt_off000106df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106DF 17972 bytes
SHA-256: 9c761c98c755d8a9684aa29bc8d97c1661e1b1e1a4077914e0c456f5e3591ab2

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