Malicious PDF — malware analysis report

Static analysis result for SHA-256 92ceb19e396495f3…

MALICIOUS

PDF

90.5 KB Created: 2021-08-08 09:00:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: c283b2a67e3fcd5ac2a780dda0646c6e SHA-1: a6c4ca8f6dd27d5935924b14563ec77a36c2bcd1 SHA-256: 92ceb19e396495f3b785a58649ee2e08a98ae7a3c4de4d894052759e30590686
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised websites and disposable hosting, characteristic of a link farm used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the 'SE_LOLBIN_RUN_COMMAND' heuristic suggest potential execution of commands or redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://nicenpos.com/userData/board/file/28193920409.pdf In PDF document text
    • http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/160cf9dcc27fe6---80789233087.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/0cbac0975f73c887dbadf903de6ec19f/lunubevaradalijovumut.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c23bf697771---2429525617.pdfIn PDF document text
    • http://sushiosushi.com/uploads/files/63087648909.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/1b823d1e76cce30959e16cd5b2778f45/55831592236.pdfIn PDF document text
    • https://etimes.mn/uploads/files/94423714237.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/sq7ban40i1b216erp3i5ocmd50/girajeze.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/bf5b8c00830b355f28209396c70b9a66/21628432226.pdfIn PDF document text
    • http://bajajsports.com/userfiles/file/30042627554.pdfIn macro / runtime command snippet
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/2dd63a460f4d6c38b789b206fc916401/78955909056.pdfIn PDF document text
    • http://akwarella.pl/user_uploads/file/45494475255.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ac8780220c---76079153372.pdfIn PDF document text
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/ca1bfa42160869a9c71b7515cf78a145/8798161323.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606c98b035c98---weverutur.pdfIn PDF document text
    • http://beming.com/ressource/site-image/files/xidevemuwefisokunudalamur.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db427eb9696---64073820055.pdfIn PDF document text
    • http://amexeuro.com/an3_Uploads/file/jometosajavuti.pdfIn PDF document text
    • http://posekatzahradu.cz/files/file/89608934741.pdfIn PDF document text
    • https://securityguardsupply.org/php/uploads/file/jaduxujapax.pdfIn PDF document text
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/2b44aivm66ksqigjfmr0h2du4o/tajemawukofi.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/1uru5pej9pf054efq0npp5urr3/voluzujiv.pdfIn PDF document text
    • http://aydinservis.com/ckfinder/userfiles/files/75843328389.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-5-7/20210507125812301119.pdfIn PDF document text
    • https://rubin2000-distribuitorshop.ro/userfiles/file/30329033117.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/In macro / runtime command snippet
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=sniper+elite+4+unlock+all+weapons+cheat+ps4PDF 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_off0000fa42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA42 10900 bytes
SHA-256: a2a8f816f2be7f8d9a69c000b7c7871a2baf79cc11f0321e2ec8feb82c38231d
font_01_sfnt_off00011386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11386 18264 bytes
SHA-256: 78dd0fbecf89f5521cbaf82821a68849a0b4e17a83de1de7a9e6ba1626b191c2
font_02_sfnt_off00014335.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14335 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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