Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bbbc852ed178aa6…

MALICIOUS

PDF

93.8 KB Created: 2021-08-12 00:57:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: 9447157d116dba28a66ae3d003f9296c SHA-1: 2766b23c16f670a551a20c926ecfc475b6fd24e0 SHA-256: 2bbbc852ed178aa67c5d2b147e1102a4142c61ec4769dc43022032f3ff3d2e6f
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous URLs, many of which point to compromised websites or are part of a link farm designed to mislead users. The primary attack pattern appears to be directing users to potentially malicious content through a deceptive link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 6

  • 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.
  • 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://orthodoxvaidikasanghom.org/userfiles/file/36413098736.pdf In PDF document text
    • https://hanurichurch.org/ckfinder/userfiles/files/kazejigax.pdfIn PDF document text
    • https://ilc.ua/wp-content/plugins/super-forms/uploads/php/files/mnjp5ff50f1fpfref0rq4bo481/4481976906.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608649a07dc06---wofojutolodewalu.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609f8855c2862---duxukodufewivavozufiron.pdfIn PDF document text
    • http://anvlaw.com/userfiles/file/82133208336.pdfIn PDF document text
    • http://hibertek.com/image/files/20210717_053040.pdfIn PDF document text
    • http://www.kilincsweb.hu/fileok/file/barenodijidazodikutisa.pdfIn PDF document text
    • https://t2sc.me/userfiles/rojunefakukop.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d42608f98c---xopisaponiruroper.pdfIn PDF document text
    • https://hagakure.by/upload/editor/files/fofefivepegixaga.pdfIn PDF document text
    • http://szkolka-wiercioch.pl/files/file/gewezukiromopelezad.pdfIn PDF document text
    • http://wisewood50th.com/clients/3/35/35ca2b70ae131fa39667c240906a3fe4/File/13408921743.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/1f01680c296b6583307ea14d43097494/xawawitizaturikegaki.pdfIn PDF document text
    • https://tepihtrava.rs//files/moluwipebipudaluweg.pdfIn PDF document text
    • http://audiencefertilization.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/23643819155.pdfIn PDF document text
    • https://www.babetravelling.com/ckfinder/userfiles2/files/87120013748.pdfIn PDF document text
    • http://fhs76reunion.com/clients/0/00/009202203981f132fd14d012a57c0fe5/File/51353236595.pdfIn PDF document text
    • https://mimpiindah1.com/contents//files/3687946130.pdfIn PDF document text
    • https://songhong.info/userfiles/file/sodepotetevi.pdfIn PDF document text
    • http://www.vinoplaza.nl/img/upload/files/71765671716.pdfIn PDF document text
    • http://berkeleyhigh64.com/clients/9/99/99a482d4bd0dc5522cc24ea7f8204a07/File/lejiratolimodeli.pdfIn PDF document text
    • http://goodmix-psc.com/userfiles/files/bolazafibilidu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=la+cantatrice+chauve+pdf+t%C3%A9l%C3%A9chargerPDF 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_off00010241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10241 20720 bytes
SHA-256: 83903ba1de06d3a9acf9d1f946691756764520192377c0270d0fd4f403d49ff1
font_01_sfnt_off000136fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136FA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014f11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F11 10888 bytes
SHA-256: 3bb7bbf408d9e3e8616eabb4af2d63e18e5702e9bc29095cb66cc9a9951f093a

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