Malicious PDF — malware analysis report

Static analysis result for SHA-256 9459261b6034e5b1…

MALICIOUS

PDF

83.8 KB Created: 2021-09-19 20:37:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 6380341bc4cb4ab604ab6337e15e2aac SHA-1: 8fa2782b1995c9dd189dfcf1160f66a40a2528ee SHA-256: 9459261b6034e5b13cfef8bc94d29dc001d4b9581dd61031be802b36c6491df2
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains multiple heuristics indicating it is a malicious phishing attempt. The 'SE_CLICKFIX' heuristic specifically notes instructions to press Win+R or paste a command, suggesting a social engineering tactic to bypass macro restrictions. The presence of numerous external URLs, many pointing to compromised CMS uploads or disposable hosting, further supports the malicious intent of luring users to download a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.
  • 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 https://archism.ru/uplcv?utm_term=download+pop+warrior+within+for+pc PDF link annotation
    • http://mptech.vn/ckfinder/userfiles/files/19519967518.pdfIn PDF document text
    • http://osteriadelcampanile.com/userfiles/files/monuguwezugubenovug.pdfIn PDF document text
    • http://baozhaopharm.com/upload/files/95237934871.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613cc37a294f7---36567313265.pdfIn PDF document text
    • http://nanopena.cz/upload/file/xafabaxututakures.pdfIn PDF document text
    • https://abctranslink.com/ckfinder/userfiles/files/49692357141.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161370ecd4c7f7---dowoj.pdfIn PDF document text
    • https://mercerapparelss.com/userfiles/files/pitadepin.pdfIn PDF document text
    • https://mobile-translator.eu/app/webroot/media/files/54855473659.pdfIn PDF document text
    • https://szabobuszrendeles.hu/files/files/wejetowepakarapu.pdfIn PDF document text
    • http://asirakademi.com/resimler/files/raromidobu.pdfIn PDF document text
    • http://jump360.co/upload/files/20210909040150.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613fce6ba8dbc---68813973520.pdfIn PDF document text
    • http://khachsandomino.com/hinhanh_fckeditor/file/vemidulikubiwopegososed.pdfIn PDF document text
    • http://www.autoservis-hubatka.cz/admin/upload/ww/file/benuju.pdfIn PDF document text
    • http://sergeybazarov.ru/file/9072238857.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613d3df37e883---sazasofozusa.pdfIn PDF document text
    • http://altus.pl/userfiles/file/zawozasiwigozitapunalu.pdfIn PDF document text
    • http://cartopack.be/Images/file/9503892298.pdfIn PDF document text
    • http://berallebags.com/UploadFiles/FCKeditor/20210917091429.pdfIn PDF document text
    • https://securitydm.com/slicice/file/gakenirizevivulegaritij.pdfIn PDF document text
    • http://archidaldegan.eu/userfiles/files/32795774795.pdfIn PDF document text
    • http://thestarbusan.com/FileData/ckfinder/files/20210910_6391D7593E679A33.pdfIn PDF document text
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/3nvbbqphcb08jd4gr3v93bdgga/wilibenijegozupoxof.pdfIn PDF document text
    • https://ontogepszerviz.hu/editor_up/difepabufafinowuten.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_off0000dffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFB 10504 bytes
SHA-256: 0dec3d9d0979bc7c38cb449acbf38f01832d9fc02fa63739f659545b8e668417
font_01_sfnt_off0000f7d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FE2 19112 bytes
SHA-256: d09484a68f242d672835ac09770a64b8fc50622dd7c4c4d86ae787ddcbdc669a

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