Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dd69565c92ed21e…

MALICIOUS

PDF

76.0 KB Created: 2021-09-01 04:43:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: c6e095bdba97979c01de875842c63b31 SHA-1: 43544e78d22d9b9218c12e043bb49a50b85aacc7 SHA-256: 7dd69565c92ed21eb490072522f610095e50df75d2da629f8f668730f03657ef
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains numerous links to compromised websites, indicating a link farm designed to redirect users. The presence of these links suggests an attempt to lead users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9934

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
  • 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://awlights.com/wp-content/plugins/super-forms/uploads/php/files/1bb741298a9b9e3ceb9415a9f291484c/85965307404.pdf In PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5882e8515---78114889825.pdfIn PDF document text
    • http://chineseclothingonline.net/File/23561092697.pdfIn PDF document text
    • http://gimnazjum-krasiczyn.pl/img/userfiles/file/24230644725.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609746296beaa---pilazubavisesogog.pdfIn PDF document text
    • http://vektor-bezpeki.com/userfiles/files/57068304059.pdfIn PDF document text
    • http://yangs-ns.com/ckfinder/userfiles/files/20210828193049.pdfIn PDF document text
    • https://luyenthitoeic.info/userfiles/file/muziwunitijodafuvabes.pdfIn PDF document text
    • http://scottleddy.net/clients/862555/File/jizamiso.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/8587174a7fe391926eba8c0d59dce9a9/wivovemibidubaku.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/k1mp64p8279e33jsckv04u8s1v/3045170861.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/8e1cc0f558d864e5ec9051801e727f6a/sadofipuminimufer.pdfIn PDF document text
    • http://szermgrt.hu/uploads/ckfinder/userfiles/files/tufatiroxafike.pdfIn PDF document text
    • https://satuldelut.ro/ckfinder/userfiles/files/23380800659.pdfIn PDF document text
    • http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a74d1568c94---kunuxakexitezikaw.pdfIn PDF document text
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/bssgkhc8et9e53tuv1om9m8bs7/famitivuxasimokize.pdfIn PDF document text
    • http://sahrugs.com/userfiles/file/54970186087.pdfIn PDF document text
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/bd44b0a6a37ad307a81592094da01c0a/mabavimit.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/7cef983f2170a48f58c6113667bace98/firodijidutojo.pdfIn PDF document text
    • http://geombiagioschettino.eu/userfiles/files/wovigasiv.pdfIn PDF document text
    • https://sibois.eu/userfiles/file/42232797251.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/d6b4ff38a37169926b6319055cf302a7/46675287533.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16087edc204f61---xofisutovuvaruzus.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1607cd6b0c8783---dovufinunel.pdfIn PDF document text
    • http://neurooperations.com/ckfinder/userfiles/files/34008722783.pdfIn PDF document text
    • https://roc.mn/uploads/files/kibusopapajipakunovut.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=scripture+on+the+breath+of+godPDF 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_off0000c793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC793 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dfa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA5 16184 bytes
SHA-256: 0fbbb75e978c638cae281f6dde9e52525491c043dc416e6e48053551b591af41
font_02_sfnt_off0001088c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1088C 11000 bytes
SHA-256: 8af60188aacb7dde2d436efbe8ca9c481785c63e80448f386064ca6d8724a429