Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ee76af03322e46f…

MALICIOUS

PDF

78.3 KB Created: 2021-09-03 07:57:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: eed53dce407f39d2459bef9e96fc9fcb SHA-1: 06e87e991de5f872dc85ee8383c294e022dbc936 SHA-256: 9ee76af03322e46fe224cc11bb079f0f6a7d79595c1c21622e7da88b8e9291d8
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. The embedded JavaScript is a common technique for initiating malicious actions within PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://paperland.bg/uploads/file/mukikarozakazan.pdf In PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/df47c1e3e06b6f13d71f1cb3757cdb89/surim.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/82375508092.pdfIn PDF document text
    • http://agriturismolescuderie.eu/userfiles/files/firejalabavumobikijugi.pdfIn PDF document text
    • http://hutbephottaihaiphong24h.com/upload/files/niwoxabudu.pdfIn PDF document text
    • http://www.cbs-emballages.com/upload/file/povatejevuwaluputujowok.pdfIn PDF document text
    • https://blugarden.eu/file/12958945224.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/03af027f100c82d945a4c44e8b2ef92c/26890969589.pdfIn PDF document text
    • http://hndgyl.com/v15/Upload/file/202192101694975.pdfIn PDF document text
    • http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fec9a679028---3720081867.pdfIn PDF document text
    • http://4grd.com/cmsimages/file/wabezemaxinixawezanepepib.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16093e239c85ca---43016686427.pdfIn PDF document text
    • http://i-daa-wl.de/userfiles/70570879170.pdfIn PDF document text
    • https://xn--bankkrtya-41a.hu/js/ckfinder/userfiles/files/tesegajifukubetovavedi.pdfIn PDF document text
    • http://aqbnb.com/uploadfile/file/87833341467.pdfIn PDF document text
    • http://adance0112.com/upfile/editor/file/86737380735.pdfIn PDF document text
    • http://ccforum.kr/uploads/file/1624567686.pdfIn PDF document text
    • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/17d1b3b066b7a9aa6951c901652fc0bf/25581652735.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/ba06590df9110b5457d3cfc2a80a7334/28112435679.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160824853ed25e---11737491064.pdfIn PDF document text
    • https://haidangpc.com/contents/files/defixaxa.pdfIn PDF document text
    • http://archinfo.ru/uploads/file/zasope.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=vaderstad+drill+manualPDF 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_off0000d33e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD33E 16128 bytes
SHA-256: 014b7f2119740678824d506a3bf72a5fa00b91cdbbc345501a1c3bcc33d83613
font_01_sfnt_off0000fc9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000114b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114B5 10360 bytes
SHA-256: 1b633491389815c79b89e99846fcd50cc19e8386caf580d7a805145b36872643

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