Malicious PDF — malware analysis report

Static analysis result for SHA-256 fafe5cb8ad2d7947…

MALICIOUS

PDF

83.9 KB Created: 2021-09-19 02:46:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: e94744bae5a9060811c38e5ca091a106 SHA-1: 7d2a6a49da292dd75cdf3897255f93e946677982 SHA-256: fafe5cb8ad2d794700faf029a8b5b00ea0fd5005f3965f11e2b9965d256e6ab6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to potentially compromised websites and disposable hosting, indicative of a phishing or link farm attack. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://irlanc.ru/uplcv?utm_term=limitless+streams+black+apk PDF link annotation
    • https://ancoraeducacion.com/images/6894120617.pdfIn PDF document text
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/161408251b1698---sufixawopalisuxibevufovo.pdfIn PDF document text
    • http://www.haztartasigepszakuzlet.hu/pics/file/buwofaselatovozejibu.pdfIn PDF document text
    • http://qianlong99.org/ckfinder/userfiles/files/61149059591.pdfIn PDF document text
    • https://www.seblocation.com/ckfinder/userfiles/files/nafulalivituze.pdfIn PDF document text
    • https://www.hermanosvalerorecio.com/ckfinder/userfiles/files/kugebapinogemataguluguk.pdfIn PDF document text
    • https://ichibaninfotech.com/ckfinder/userfiles/files/80463047125.pdfIn PDF document text
    • https://isitekmuhendislik.com/userfiles/file/45376761246.pdfIn PDF document text
    • http://jiendurancecoaching.com/ckfinder/userfiles/files/15222785480.pdfIn PDF document text
    • http://abnig.friendship-match.com/upload/files/bedupaka.pdfIn PDF document text
    • http://suvagcentr.ru/userfiles/files/napurosa.pdfIn PDF document text
    • http://webinaris.net/ckfinder/userfiles/publics/files/12586918877.pdfIn PDF document text
    • http://losmarinoslanzarote.com/marinarubicon/admin/file/benax.pdfIn PDF document text
    • http://msinziniering.com/userfiles/file/bumama.pdfIn PDF document text
    • https://v-rshine.com/upload/images/files/41553599337.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/002255a6799ac86d78568f64b6c8471d/gutetunepofogifonofu.pdfIn PDF document text
    • https://kcss.hu/korosi/userfiles/file/nenenugivowowilumisaz.pdfIn PDF document text
    • http://laserinnsbruck.com/static/zedoxepidiwilixapafex.pdfIn PDF document text
    • http://myrbacken.se/login/ckfinder/userfiles/files/57323097697.pdfIn PDF document text
    • http://citty.org/images/uploads/file/83128679646.pdfIn PDF document text
    • http://jjw-led.com/userfiles/file/jamobijasafixapida.pdfIn PDF document text
    • https://essaidafm.com/uploads/FCK_files/file/89301511535.pdfIn PDF document text
    • http://studiofagiani.eu/userfiles/files/purorimut.pdfIn PDF document text
    • http://sz-nuoyi.com/Upload/file/2021091514592388418.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/0c652e1172066e8d6b07525aa0e645b4/dokikafuxidagapudoliluta.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_off0000e178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE178 18928 bytes
SHA-256: b7d1eb41d7f66b21c37f42c63a6a29958b2a7c462271df0fed9ccf96243c858a
font_01_sfnt_off00011234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11234 10500 bytes
SHA-256: a0bf8b878bd6bfe0adb87bdc7870c2fa9dd295d92f4210afa9516d03e0a84b44
font_02_sfnt_off000129e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129E5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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