Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba0b614e165eafd1…

MALICIOUS

PDF

75.5 KB Created: 2021-08-31 08:10:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: c76933f0ae5cd05c0d2d8980ea720bdf SHA-1: fec7376de3bb3713bb1108180c2d3dc6fe6f8193 SHA-256: ba0b614e165eafd1adff7b03b2c95c60b614b566823b7aed26ee4ae91273a073
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous external URIs and link farms pointing to various domains, suggesting a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://drafthe.ru/uplcv?utm_term=state+department+of+labor PDF link annotation
    • http://ttc-investco.com/img/files/gafekegeluvif.pdfIn PDF document text
    • http://takeacode.net/user/d41d8cd98f00b204e9800998ecf8427e/file/87027081646.pdfIn PDF document text
    • https://kristinanamaste.eu/files/8592368114.pdfIn PDF document text
    • https://hmanagement.net/userfiles/file/62034843510.pdfIn PDF document text
    • http://3e3i.com/UserFiles/file///56423206171.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a809246eb0b---kawijobosoguririzamisiva.pdfIn PDF document text
    • http://pilot-market.ru/new/files/file/gurit.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1611e3bd0d17b8---61178542147.pdfIn PDF document text
    • http://toyotacri.com/userfiles/files/sumodivi.pdfIn PDF document text
    • https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/f80977a4f928ead9f3544c28132a481b/74386757577.pdfIn PDF document text
    • http://historia-bfured.hu/userfiles/file/rovobukusafexunusabaleja.pdfIn PDF document text
    • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/ie90ghb9p3udn9kim0gmgvlhk6/zovubuxujukigowojure.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/rpi0jeo7fdg9h29u6401jvv48o/serunisofafolenofabos.pdfIn PDF document text
    • http://letresorellebio.it/userfiles/files/66589430601.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/s18tukqta3h7vjat424ipm6hg5/fagemiwetajorixirevivu.pdfIn PDF document text
    • https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/4p1b1gn9ut53h7mr95numlhfgf/dekapevogaru.pdfIn PDF document text
    • http://kenzoum.org/home/integrity/public_html/ckfinder/userfiles/files/55031140338.pdfIn PDF document text
    • https://gtselect.fr/ckfinder/userfiles/files/melozapu.pdfIn PDF document text
    • https://ladangmimpi.com/contents/files/89812524588.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/djvojch9f5lu847uvgfas66ne7/dakuzotelovafi.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/65bb37a1f446d02ea45527a9823c7248/zuwemebugejonelezekoki.pdfIn PDF document text
    • http://ty-universe.com/image/files/20210829_195616.pdfIn PDF document text
    • http://lamekatus.ee/uploads/ckeditor/files/98629410664.pdfIn PDF document text
    • http://foxdigi.com/userfiles/file/63058178434.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_off0000c3fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3FB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dc0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0D 17288 bytes
SHA-256: 25b82b194342eab4444da3e996666df9b312d1ea1353eb2ed7b91088bb3d6fc7
font_02_sfnt_off00010889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10889 10612 bytes
SHA-256: c3dffea746afd4279642903e914660f70c34a24dc3d97a116fbdb5fb6868122a

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