Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f5ccef326b13886…

MALICIOUS

PDF

84.8 KB Created: 2021-09-13 04:52:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: ce7b36543ff40e8c61ba14348fabe93f SHA-1: 0419f3530a326b925f7b1b4cd32b716cbef6c178 SHA-256: 1f5ccef326b13886217dfd68a4605d6512f33c830dee9697cece5749cf8487d8
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a high heuristic indicating it functions as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. The file's structure and URL patterns are consistent with attempts to lure users to external sites, potentially for credential harvesting or further payload download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • 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.
  • 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 https://kingbakerypans.com/userfiles/file/52250738152.pdf In PDF document text
    • http://www.mamafoundation.cz/ckfinder/userfiles/files/22216687629.pdfIn PDF document text
    • http://radioevangilereal.com/assets/ckfinder/core/connector/php/uploads/files/migomigaganuvobuxi.pdfIn PDF document text
    • http://vpecargo.com/userfiles/file/setifilidawawer.pdfIn PDF document text
    • http://limuzine.md/userfiles/file/88084211993.pdfIn PDF document text
    • http://naturallabs.de/userfiles/file/46009112008.pdfIn PDF document text
    • http://grandviewgroupresort.com/upload/files/45630375674.pdfIn PDF document text
    • http://wcsps.com.tw/ckfinder/userfiles/files/77551745352.pdfIn PDF document text
    • http://videotour24.com/data/fckupload/file/kemixikolixoxaremofilulo.pdfIn PDF document text
    • http://synthecinter.com/userfiles/files/36825704889.pdfIn PDF document text
    • http://dealershop.es/userfiles/file/vajipaj.pdfIn PDF document text
    • https://www.totalblissbeauty.com.au/application/third_party/ckfinder/userfiles/files/25600656796.pdfIn PDF document text
    • https://mayersoffice.com/userfiles/file/43652016963.pdfIn PDF document text
    • http://allineers.morefriendship.com/upload/files/sipamatibo.pdfIn PDF document text
    • http://dblbtech.com/userfiles/file/50384899554.pdfIn PDF document text
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/5f64eeece1e15d4f2f0bcbc51be53a67/73298530230.pdfIn PDF document text
    • http://www.santabriganti.org/admin/ckfinder/userfiles/files/rixumaponujidi.pdfIn PDF document text
    • https://mgc.to/sites/web/upload/files/duzixexonotixe.pdfIn PDF document text
    • http://avvocatoandreabruschi.it/userfiles/files/46722401183.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/rivugivogapomuv.pdfIn PDF document text
    • https://stephankeppel.com/userfiles/file/kulirokigazetasiput.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613918388da33---xinaluvafale.pdfIn PDF document text
    • http://residenceraffaellotorino.com/userfiles/files/taxeligi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+to+screen+record+snapchat+without+them+knowingPDF 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_off0000e514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE514 11184 bytes
SHA-256: e4d163c9461396b443baa6e6dd748d74902f9259a19cc29de6a875b96b26d959
font_01_sfnt_off0000fede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEDE 18020 bytes
SHA-256: 0f19320df242e8a72facf396ef8634c678c135fe358dfffab9c3be934beb1dce
font_02_sfnt_off00012d8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D8D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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