Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5d113bc6dde92e6…

MALICIOUS

PDF

75.7 KB Created: 2021-09-17 10:02:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 150d277be350750b7043f2d38f5435d9 SHA-1: e67f2fb56fa0818efd2b46d2ea3392df6883f3af SHA-256: e5d113bc6dde92e6c21dcb0277f7a28910d3757a6a7abb3f46895a38dd922dac
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple external URIs, including one pointing to a raw IP address, suggesting an attempt to redirect the user to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with a phishing or malware distribution lure, likely involving a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ji-tien.com/userfiles/file/45594496325.pdf
    • http://01host.ru/userfiles/files/dabut.pdf
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/a3c39aa144a7d9af2ea19249b728f81d/15808065013.pdf
    • http://celeb.huh.hu/UserFiles/File/roxokexorek.pdf
    • https://novamakine.com/upload/ckfinder/files/98962611699.pdf
    • http://remobudostol.pl/pliki/30128547307.pdf
    • http://bjaimama.com/data/upload/2021/09/file/202109141156007190.pdf
    • http://discus-rus.ru/upl/file/zenuvijimebexiwoterimuxe.pdf
    • http://rsport.eu/yonexshop/static/file/47238289433.pdf
    • http://211.129.1.225/system/ckfinder/userfiles/files/jonixojixivuso.pdf
    • http://foto-recepty.sk/images/fotky/dijazufimazen.pdf
    • http://ltmetal.com/userfiles/files/58740030436.pdf
    • https://www.artikel238.nl/emmwebbit/resources/ckfinder/userfiles/files/43083177461.pdf
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/161416e560d70e---nanemefewalok.pdf
    • http://dorapeyzaj.com/userfiles/file/sipeboxotudoko.pdf
    • https://yenhuy.vn/upload/files/21009866961.pdf
    • http://prime42.ru/userfiles/files/fejejelepijivigorudi.pdf
    • http://isleford.com/filespath/files/20210916080233.pdf
    • https://guapa2.com/admin/fck/file/kudozamikevusiduvaza.pdf
    • http://skulpt.in/admin/uploads/file/34606103803.pdf
    • http://cuanhomkinhtoanthang.com/media/file/ruwovumawitigunugufa.pdf
    • https://ruiguoex.com/upfile/files/2021/09/05/34566336610.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=minecraft+pe+texture+pack+maker
    • 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_off0000c308.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC308 16792 bytes
font_01_sfnt_off0000db1a.bin
db6db3ee0d3b32cf2489987d2892b797b5a9448062130e39ebd509c701231f1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1A 17576 bytes
font_02_sfnt_off00010905.bin
f795fc8b2d5027d1f2a59169e92827d44a9fcec44357b4b2ba249a68a970e8ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10905 10596 bytes

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