Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e60f624bdbfca4b…

MALICIOUS

PDF

77.8 KB Created: 2021-09-06 03:32:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: e6a5f7a5813a2150889d953e425bb001 SHA-1: 57685f3dae94836509f38418ba17c41fe691452f SHA-256: 6e60f624bdbfca4befb90453f06ca18a60a99343e4e9305eb48cde6cf86c6934
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, pointing to numerous compromised WordPress upload directories and disposable hosting sites. This suggests the document is designed to redirect users to potentially malicious or phishing content, rather than providing legitimate information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://jeremypourstarlight.com/clients/5/53/539822683240d2210db56c0084569a8b/File/39315323839.pdf In PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c89e1255c76---51752251220.pdfIn PDF document text
    • http://daiquangsico.com/img_duhoc/files/90987883668.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/d3e22f51347c0a83a8f01bb4914798b9/61181265945.pdfIn PDF document text
    • https://momsgardenfoods.com/ckfinder/userfiles/files/xemewaze.pdfIn PDF document text
    • http://mini-garden.ru/userfiles/file/vamuwijozita.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee74cf400bc---xiruwenokiz.pdfIn PDF document text
    • http://fusheng-vietnam.vn/admin/webroot/upload/image/files/50892413923.pdfIn PDF document text
    • http://renovator.cz/files/file/10431933546.pdfIn PDF document text
    • http://waltonjohnsonfamily.com/clients/870437/File/12089081169.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/7fa07ce08c73cc02a00e1a6bf5987540/17263013959.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/spj1oldfgbbmaq4j829l6rh0as/vopivobotokizupubapij.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f5d4dd5830---zodewir.pdfIn PDF document text
    • http://influences-vegetales.eu/assets/Image/files/66134230394.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7eab36de3---65792595382.pdfIn PDF document text
    • http://benevolo.it/userfiles/files/jafirekegalej.pdfIn PDF document text
    • http://wx-bm.cn/upload/ckimg/files/202108071416133227.pdfIn PDF document text
    • http://kaies.cn/upfiles/210525011213649782exynon.pdfIn PDF document text
    • http://papierplus.pl/userfiles/file/30365833750.pdfIn PDF document text
    • http://mamnonsaokhue.vn/app/webroot/files/ckfinder/files/pezamipeje.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/2g3u6mo1eu4j3mc166nvcj4ghv/zonavosot.pdfIn PDF document text
    • http://billedbutikken.dk/articlefiles/file/sunatibilimufo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=omal+butterfly+valve+pdfPDF 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_off0000cb0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB0A 17912 bytes
SHA-256: 50f6d79dfd341509d44e591936bd72d06d05f8d459b8fee13e154fd9f6ac2dcb
font_01_sfnt_off0000f971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF971 10620 bytes
SHA-256: 9c5a66205b79f15bc198f334e37d69ca747f1d9a8e5c04f13e991c33484e82df
font_02_sfnt_off000111a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111A7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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