Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d047906724e2a23…

MALICIOUS

PDF

92.9 KB Created: 2021-10-06 05:48:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-07
MD5: 76dd4907664b7bdbd7f7106bada54c96 SHA-1: ba633de8d6b8fa1565950d3baaedc6628a644df2 SHA-256: 0d047906724e2a23390c6c16e81f60afb360e181aed25a79291a4ba695b7c553
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, directing users to multiple compromised websites and potentially malicious URLs, such as 'https://pixomot.ru/uplcv?utm_term=smite+ps4+keyboard+and+mouse'. The presence of external URI heuristics and link farm detections indicates an attempt to redirect users to potentially harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9726

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
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://pixomot.ru/uplcv?utm_term=smite+ps4+keyboard+and+mouse PDF link annotation
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/0403cc0ac706e04347dee972a88cef49/disofadawuj.pdfIn PDF document text
    • http://24horasnoar.com.br/ckfinder/userfiles/files/zerisawi.pdfIn PDF document text
    • http://elateridae.com/images/FCKeditor/file/66073846476.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/17aad72e88bc4fbacd973e3b526b7ddf/ruribudugomobo.pdfIn PDF document text
    • https://shreenatharcade.com/userfiles/file/loxaxedalefugijomanawexub.pdfIn PDF document text
    • http://pokeocncafe.com/uploads/files/94274353758.pdfIn PDF document text
    • https://takarasushimn.com/userfiles/files/nurorapuvanasew.pdfIn PDF document text
    • http://zhouzhuanx.com/v15/Upload/file/2021912526303452.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/16131be01d34d5---betometuvinegetesudisune.pdfIn PDF document text
    • https://jakspravnenapsa.cz/userfiles/file/nopalizuzonuwevolu.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615405e9ac303---vazubevivareligifono.pdfIn PDF document text
    • https://speakingparrot.com/upload/ckfinder/files/tozalupemazokedovas.pdfIn PDF document text
    • http://fatfailogistics.com/fckeditor/files/file/gowis.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/490cd0b9bf8dcd953b46acee567fa609/48742239157.pdfIn PDF document text
    • http://35ct1.com/images/ckImageFiles/files/22378084875.pdfIn PDF document text
    • http://hiro-seiko.com/upload/files/wunigenigixinezuz.pdfIn PDF document text
    • http://sm.ac.th/ckfinder/userfiles/files/32411195567.pdfIn PDF document text
    • http://lamekatus.ee/uploads/ckeditor/files/kisejatukuwuxafud.pdfIn PDF document text
    • http://thermogroup.ru/uploads/files/funejijixikafepukikag.pdfIn PDF document text
    • http://wine-paraphernalia.com/files/winep/_repo/file/pifufexukubuzub.pdfIn PDF document text
    • http://orthocarecentroortopedico.it/userfiles/files/rajemafemofuwatopisopere.pdfIn PDF document text
    • http://nazycakes.com/userfiles/file/nefiga.pdfIn PDF document text
    • https://neurondevelopment.org/userfiles/file/37051119253.pdfIn PDF document text
    • http://bangdinhphucat.com/quangbasanpham/app/webroot/upload/image/files/jepitox.pdfIn PDF document text
    • http://klawiatury-foliowe.pl/_data/file/timabeteziroxijibob.pdfIn PDF document text
    • https://bayihoki99.com/contents/files/34877797722.pdfIn PDF document text
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00012e59.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12E59 18340 bytes
SHA-256: 0eb794d36e8725f16170471f0892c6ca74cc48d40fb7953fa5a7384fb3ffce56
font_00_sfnt_off0000e01e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE01E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF830 20352 bytes
SHA-256: 96f723fdc67d389b01fa5ea9ab1331baecdecc2b19c9f17c033d0c1270847326
font_03_sfnt_off00014b3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B3C 11104 bytes
SHA-256: c94ad6546c2b0601490cd6cf9d67b0bce9db6627b7ab5c5521311dca9a9aa557

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