Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd0e0a19c86be705…

MALICIOUS

PDF

83.8 KB Created: 2021-07-14 03:11:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 131832a91801be4bde0dcfa5a4363caa SHA-1: ce0ecdec86818c5583ea41a8d173686cbf629f0a SHA-256: cd0e0a19c86be705c0158e2a01043ef898aa8003f67d4a615179caab99d14599
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The numerous embedded URLs point to a link farm hosted on various domains, many of which appear to be compromised CMS uploads, suggesting a phishing or malware distribution scheme. No scripts were extracted, but the PDF structure itself is designed to redirect users to external, potentially malicious, content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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 https://garglob.ru/uplcv?utm_term=win+place+show+payouts PDF link annotation
    • http://bajcsidavidfoto.com/_user/file/33488918709.pdfIn PDF document text
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/a2l74ks53sgf471mal5ac6kfk6/66242880774.pdfIn PDF document text
    • http://broadmoor77.com/clients/39738/File/40983768926.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a8d23d774fb---79748979727.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/ebbd643cdd0365fb71085c7ef1eecf93/78403156213.pdfIn PDF document text
    • https://silverstonedevelopments.com/ckfinder/userfiles/files/40264363220.pdfIn PDF document text
    • http://broadviewlibrary.org/uploaded_bvlib/file/xavobukujidapepawoji.pdfIn PDF document text
    • https://digireg.it/upload/21170426593.pdfIn PDF document text
    • http://cnzgks.com/userfiles/file///xarakisi.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/16075061ca8936---vegobikagazikopoxufamenat.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160799b87316fb---23681495820.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bdab61969be---gilituzokulorazani.pdfIn PDF document text
    • http://zonazero.es/userfiles/file/dutakuluk.pdfIn PDF document text
    • https://area34.info/wp-content/plugins/super-forms/uploads/php/files/m4dpvch5h6eo1fl9caleunsin2/kisofuzumavavafasuta.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/cp955kt2dsfameg9108khq15d5/gidugakazoxamimano.pdfIn PDF document text
    • https://sikanderajam.com/Robinson/ckfinder/userfiles/files/guleminoxodimi.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/4d3e2f0df4379dca8aa3c887ea83aa46/15580648847.pdfIn PDF document text
    • https://jordanadams.com/ckfinder/userfiles/files/veguzupe.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/vegufajogorewogugego.pdfIn PDF document text
    • http://numismatika-nbkpdy.cz/userfiles/file/navosidajifamajavatubis.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4DF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fcf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF6 10664 bytes
SHA-256: eb857334c12af2eeddcf1474bc2c052b7d74fb197abee645987fd342cad9119c
font_02_sfnt_off0001156c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1156C 17212 bytes
SHA-256: 7ca840276de651a882a541cbe20a0c700a7cbf3754f6bc06193b07e365f982b9

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