Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee783c79566780b4…

MALICIOUS

PDF

81.4 KB Created: 2021-09-08 19:37:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 36583aa33a35395d84a7dd9081c0bbfe SHA-1: abf25f8e55388cfc27b9386ddb9358d32670055d SHA-256: ee783c79566780b4d9a02fea42543db3023921d9473fae51e1aeed5f92ee942d
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The PDF contains embedded JavaScript and a large number of external links, many of which point to potentially malicious domains. The presence of embedded JavaScript suggests an attempt to execute code within the user's browser or PDF reader, likely to download further malicious payloads or redirect to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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
  • 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://plaschke-partner.com/uploaded/file/27289568083.pdf
    • http://anthonyvienna.com/sites/default/files/file/4583679078.pdf
    • http://artattack-concerts.de/files/file/zelatamowarif.pdf
    • http://abwcockeysville.com/uploads/files/81608938694.pdf
    • http://podolsk-kondicionery.ru/upload_picture/file/damavedaribotujepefizu.pdf
    • https://xn----7sbbg1ddpkdc.xn--j1amh/uploads/files/11981543491.pdf
    • https://koltoztetes-szallitas-lomtalanitas.com/ckfinder/userfiles/files/gekimo.pdf
    • http://lemma-studio.pl/userfiles/file/fanuberozafa.pdf
    • http://rayanchem.com/d/files/binoku.pdf
    • https://costarica4d.com/contents/files/46445036962.pdf
    • http://plovdivweek.com/app/templates/js/ckfinder/userfiles/files/rokaxoduvemikoribufufinol.pdf
    • http://bennett-legal.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/35740073966.pdf
    • http://sun-tes.ru/files/file/besajupufirawuxurexuse.pdf
    • http://fiumevivo.it/userfiles/files/34560535357.pdf
    • https://ibshospitals.com/userfiles/file/80090678038.pdf
    • http://unite-chem.cn/upload/files/zinelomonifoxi.pdf
    • https://mpressivelabels.com.au/application/third_party/ckfinder/userfiles/files/64166801089.pdf
    • https://loyallcanada.ca/editor_files/file/64909680609.pdf
    • https://etevent.itweald.com/uploads/files/6135c2ce21a83.pdf
    • https://smartcirclegroup.com/userfiles/file/lufovikijil.pdf
    • https://songhong.info/userfiles/file/famatufemipusafonuvi.pdf
    • http://terwaarde.be/ckfinder/userfiles/files/dubejipegujak.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=tata+mcgraw+hill+general+studies+book+free+download+pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2f3.bin
5afe182a719a6bcd98a177f24ca5226b44688a7497b385605a62d3b05ee9cda3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F3 18964 bytes
font_01_sfnt_off00010499.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10499 16792 bytes
font_02_sfnt_off00011cb0.bin
c6ab8cd847c0bc0e39893f94b238dac8f0d3a6e1345d245af6e2303870a1ead8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CB0 11448 bytes

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