Malicious PDF — malware analysis report

Static analysis result for SHA-256 30848b7ceb5fe168…

MALICIOUS

PDF

70.6 KB Created: 2021-09-13 01:59:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 41e69e71510a52a719cc1846e0106830 SHA-1: c9e9804abe00ac5ea035fd5d72c8100741ec014f SHA-256: 30848b7ceb5fe168928e7a846998c48e654770932c21228fe5485211d1c7351d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, with many hosted on disposable domains, indicating a link farm or redirection strategy. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and external link behavior are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://forma8.kz/ckfinder/userfiles/files/47770556788.pdf In PDF document text
    • http://parcroyale.hk/userfiles/55700141548.pdfIn PDF document text
    • http://meimagedance.tw/ufiles/files/sanogupalinefebed.pdfIn PDF document text
    • http://webminmax.com/userfiles/file/29121414683.pdfIn PDF document text
    • https://virtrade.gr/userfiles_lybo/file/nufodukesorurokiwad.pdfIn PDF document text
    • https://beldapromosyon.com/calisma2/files/uploads/57689759308.pdfIn PDF document text
    • http://blessingsngo.in/userfiles/files/1661406302.pdfIn PDF document text
    • http://rybarict.cz/webpagebuilder/ckfinder/userfiles/files/sopil.pdfIn PDF document text
    • http://shopabrang.com/images/files/3187749319.pdfIn PDF document text
    • http://travelspace.pl/userfiles/file/poxufuzo.pdfIn PDF document text
    • https://ikuseikyokai.jp/ckmedia/files/54539046111.pdfIn PDF document text
    • https://riolisboa.com/images/ul_files/file/gfoVRHcFsB10.pdfIn PDF document text
    • http://stark-tools.ru/images/uploaded/41802389393.pdfIn PDF document text
    • http://hfnhsw.com/upload/files/tupaxir.pdfIn PDF document text
    • https://seedcambodia.org/htdocs/cljr/data/files/72688600576.pdfIn PDF document text
    • http://fandimnarodaku.cz/upload/file/6078696227.pdfIn PDF document text
    • http://candybeauty.vn/upload/files/xowiwevikefe.pdfIn PDF document text
    • http://xn----8sbemnkjd7bfu.xn--p1ai/design/img/upload/file/lusonavafubuwatese.pdfIn PDF document text
    • https://autotronics.vn/userfiles/file/77599242636.pdfIn PDF document text
    • http://condominiobrisasdelnorte.com/userfiles/file/revakomorugemefofave.pdfIn PDF document text
    • http://papinchess.ru/userfiles/file/90732988142.pdfIn PDF document text
    • http://kco.su/userfiles/file/73041974967.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/70990111880.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=legacies+season+3+episode+1+watch+onlinePDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b1fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1FA 16160 bytes
SHA-256: d567da913427875c9920250ce27d321aa16fc8cc6d6f6f2d1851970fa77f0ea6
font_01_sfnt_off0000db4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB4C 10960 bytes
SHA-256: ea0b9509feac261d3d934e6ee52d79b645158a223782803cc8b9dcaaa4d9999a
font_02_sfnt_off0000f497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF497 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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