Malicious PDF — malware analysis report

Static analysis result for SHA-256 00a192c809a1a339…

MALICIOUS

PDF

68.8 KB Created: 2021-09-30 21:59:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 8f6d16c6807d7d7810ee6b12fe9573dc SHA-1: 98701d17984e3d8abab08f7f1b7da7effc752d13 SHA-256: 00a192c809a1a3393a6bfb98af63f5274031ab6dcf756c12afb59eb53f531b0f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically identified as a phishing trojan. It contains numerous embedded URLs that point to disposable domains, functioning as a link farm. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a large number of links on potentially compromised or low-reputation sites, suggesting a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://infrive.ru/uplcv?utm_term=iptv+live+smarters PDF link annotation
    • http://blfimmobiliare.com/userfiles/files/46484254723.pdfIn PDF document text
    • http://umrllc.com/userfiles/files/fapedakozexumapu.pdfIn PDF document text
    • http://winhazel.com/indigo/ckfinder/userfiles/files/xetidutowolazobegimurok.pdfIn PDF document text
    • https://macauroommate.com/ckfinder/userfiles/files/tedemewum.pdfIn PDF document text
    • http://ssatripoli.org/userfiles/file/53628653625.pdfIn PDF document text
    • http://mid-europe-ex.com/images/blog/file/61001020434.pdfIn PDF document text
    • http://elitvorota.ru/f/file/xujenitegojepew.pdfIn PDF document text
    • http://lexxyin.net/files/fckeditor/file/damavumonu.pdfIn PDF document text
    • http://droprint.my/home/ququ4923/public_html/userfiles/file/lojuvo.pdfIn PDF document text
    • https://klcconsulting.eu/klc/file/vezotuwefizuvoka.pdfIn PDF document text
    • https://bywuf.org/upload/editor/files/xowakopilenatu.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/16134349c9985d---ludogejaratep.pdfIn PDF document text
    • https://cpsguffanti.com/uploads/file/6200230095.pdfIn PDF document text
    • http://spad.kr/userData/ebizro_board/file/nurosuzeragolunavukemakus.pdfIn PDF document text
    • https://shipnhanh247.vn/asset/files/nifugobikuxo.pdfIn PDF document text
    • http://sartoriaventurini.com/userfiles/files/93500754864.pdfIn PDF document text
    • http://satisfytech.com/ck/upload/files/48039420692.pdfIn PDF document text
    • http://emeat.ru/var/files/46038189009.pdfIn PDF document text
    • http://pacemakerpressintl.com/uploads/assets/file/luvijepexukit.pdfIn PDF document text
    • https://ywint.com/ckfinder/userfiles/files/1632679602.pdfIn PDF document text
    • https://aynadakikemalizm.com/resimler/files/41563406904.pdfIn PDF document text
    • http://rosniyom.com/userfiles/files/xuwisaru.pdfIn PDF document text
    • http://salman-is.com/userfiles/file/zafuwomapebilebiselixun.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_off0000ae1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE1F 10204 bytes
SHA-256: 552987c16a56dfc9efe400ca85cc54af4677e3b05af84cc6a765fcefcaa3f7cc
font_01_sfnt_off0000c50a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC50A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000dd1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD1C 16032 bytes
SHA-256: 21129a1e7555d1377c7a804ee9e010000b1cfe19d17d9c653754a910b59d5a7f

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