Malicious PDF — malware analysis report

Static analysis result for SHA-256 62e96f58d84a16bd…

MALICIOUS

PDF

83.4 KB Created: 2021-09-05 06:04:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: a8512031490026c1b32d6a5659e5f4ec SHA-1: 3b976ea2b5f93086f58f2cfa581a91e7775b4dd6 SHA-256: 62e96f58d84a16bd3af8721b4883e922f7b38163dde2bc19dc5d6e5a2797af37
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or delivering a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

Heuristics 7

  • 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.
  • 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://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611d35e19f7df---88749435035.pdf In PDF document text
    • https://alzubidi.com/userfiles/files/sugepuzonesalis.pdfIn PDF document text
    • https://promise-land.com/upload/file/15700800667.pdfIn PDF document text
    • https://siemreaptraveltours.com/userfiles/file/93222162753.pdfIn PDF document text
    • https://topinsolventa.ro/userfiles/file/86681998103.pdfIn PDF document text
    • https://www.lloydsunder30s.com/ckfinder/userfiles/files/siromibidepowaleku.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/3485a9d8bf92184e591dd73356a77213/gubaxibokujopasaw.pdfIn PDF document text
    • http://altelaw.com/uploads/image/file/35722199368.pdfIn PDF document text
    • https://infrapanel-alegjobbfutes.hu/userfiles/file/81903310008.pdfIn PDF document text
    • http://santabruna.cl/upload/file/lununalozexijaxezuxada.pdfIn PDF document text
    • http://fogathajtohirek.hu/fckfiles/file/55976605150.pdfIn PDF document text
    • https://pristineleather.com/userfiles/file/dataditizikokadisip.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5d1d213b2---duzizabu.pdfIn PDF document text
    • http://www.alfapilates.pl/upload/file/20670185721.pdfIn PDF document text
    • http://algarestofos.pnh.pt/js/ckfinder/userfiles/files/14615239507.pdfIn PDF document text
    • https://kueapem.com/contents//files/bixepebiguremose.pdfIn PDF document text
    • https://olmitek.by/wp-content/plugins/super-forms/uploads/php/files/crom89hmneqvoun4v8v3clmov6/39570843009.pdfIn PDF document text
    • http://thietbimaugiao.vn/Images_upload/files/towegekagutegupipez.pdfIn PDF document text
    • http://chenruichem.com/upload/files/28761167793.pdfIn PDF document text
    • https://4cmedica.com/ficheiros_upload/file/45851096545.pdfIn PDF document text
    • https://sofanet.ro/ckfinder/userfiles/files/73115397035.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16109272d57e9c---perubafekaluxal.pdfIn PDF document text
    • http://hebammenglueck.de/ckfinder/userfiles/files/natetikorega.pdfIn PDF document text
    • https://gagiongvitgiong.com/ckfinder/userfiles/files/kefigi.pdfIn PDF document text
    • http://chinalabware.net/d/files/pafemimegubexukafagu.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/16075d0eb27b52---61648588995.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=canter+assertive+discipline+model+pdfPDF 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_off0000e066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE066 10880 bytes
SHA-256: 838275b1765c8b47afaa9a8f2be9f23bfdf33658945437fb3cbb6cce17a94294
font_01_sfnt_off0000f994.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF994 17800 bytes
SHA-256: e893e9f33130b62b67a20961a0290e196186fe67ba375a3787447b72110efdb4
font_02_sfnt_off00012745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12745 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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