Malicious PDF — malware analysis report

Static analysis result for SHA-256 02129d0b8b627b2f…

MALICIOUS

PDF

80.7 KB Created: 2021-09-20 01:09:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 5c58a63b9cb2e91ea183ecff6fa10fc5 SHA-1: 82f8acd2f1280680fc4951fbc6bbe735ea7c3875 SHA-256: 02129d0b8b627b2f23aa5f2959e3efeeb5bce8ff09e35ca18db69687d7c7bace
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 websites or disposable hosting, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript likely facilitates the redirection to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://philabc.ru/uplcv?utm_term=neutron+music+player+pro+apk+free+download PDF link annotation
    • http://www.radeton-cz.vasestranky.cz/ckfinder/userfiles/files/1196364265.pdfIn PDF document text
    • http://uptindia.com/newsimages/file///31072535435.pdfIn PDF document text
    • http://www.papelerialapiceros.es/ckfinder/userfiles/files/belukuwijodaforapavefob.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/a597098015654ec0c77a2c06046bbc75/36689433201.pdfIn PDF document text
    • https://tramtron.vn/uploads/files/files/ronilov.pdfIn PDF document text
    • http://biomax.shop/filespath/files/20210913045143.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16136f4e02ee82---zutedepozofuxara.pdfIn PDF document text
    • https://agri-mal.pl/userfiles/file/77639453723.pdfIn PDF document text
    • http://stcforanebanglore.smcim.com/www/js/ckfinder/userfiles/files/83801903296.pdfIn PDF document text
    • https://yk-tech.com.tw/ckfinder/uploads/ckfiles/files/49433196878.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16131f792dc660---24163531451.pdfIn PDF document text
    • https://wroclawmodelshow.pl/ckfinder/userfiles/files/15207754644.pdfIn PDF document text
    • https://aspirans.com/files/file/9420061056.pdfIn PDF document text
    • http://nhadeptannguyen.com/uploads/files/58539682226.pdfIn PDF document text
    • http://tainghe.vn/userfiles/file/raxomitefuropataje.pdfIn PDF document text
    • http://ordineveterinarivenezia.eu/userfiles/files/limuj.pdfIn PDF document text
    • https://brianhigbielaw.com/UserFiles/file/xosarobokanojorogeled.pdfIn PDF document text
    • http://yeosingol.com/FileData/ckfinder/files/20210901_09510214660551DC.pdfIn PDF document text
    • http://veterinariacomportamentale.it/userfiles/files/84294314021.pdfIn PDF document text
    • http://imosa.asia/uploads/files/202109140704572792.pdfIn PDF document text
    • http://music-summer-courses.eu/upload/files/38732370094.pdfIn PDF document text
    • https://udruga-invalida.hr/files/junepifa.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/9d9f2eaa8568c2175e88c52c7ce13b8b/fabojigijesadujawowobop.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_off0000d794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD794 16500 bytes
SHA-256: e9250e46be6316d53b8b220f3ef02d11f71e6b5b24e08457bfed8d0dff0b3fab
font_01_sfnt_off0001026f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1026F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011a86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A86 11148 bytes
SHA-256: b2b95dd9224a1b0c6f13b12c0dffe4357216067a375f93cd3429d6a862827ab7

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