Malicious PDF — malware analysis report

Static analysis result for SHA-256 d360fdca7be8bf51…

MALICIOUS

PDF

67.7 KB Created: 2021-02-02 10:38:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15f58de98200277a05dd5ebbd349d5e3 SHA-1: d0291eb7cf98152a14c5256db7744e5d74948545 SHA-256: d360fdca7be8bf51509ddbba0715a6d621380a6b45bc5136d3d2e8fb59a87b47
222 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK indicating a connection to known malicious infrastructure. The SE_INVOICE_LURE heuristic suggests a phishing pretext. While no scripts were extracted, the sheer volume of links and the ML classification strongly suggest a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://yafferge.ru/aws?utm_term=free+printable+billing+statement+template
    • https://cdn.sqhk.co/podadoxafa/hnidC1c/susamusojo.pdf
    • https://duditoza.weebly.com/uploads/1/3/2/3/132302736/6665535.pdf
    • http://8gusevshop.website/10757658411sr5cj.pdf
    • http://im-marceting.site/dolphin_browser_for_pc_32_bitp8mdk.pdf
    • https://cdn.sqhk.co/rawegili/zgjgeie/huda_beauty_daily_skin_care_routine.pdf
    • http://idealslim-italiaoficial.site/handbook_of_cardiac_anatomy_physiology_and_devices57bzl.pdf
    • https://static.s123-cdn-static.com/uploads/4478667/normal_5fefdefd29ca1.pdf
    • https://cdn.sqhk.co/rifusofuwedi/rzUjbJI/gibalukejoranedepirigurin.pdf
    • https://cdn.sqhk.co/tefozakozup/CngddlZ/vatukewufenubim.pdf
    • https://cdn.sqhk.co/girolivudafo/fRNheKD/wapekuvakezavip.pdf
    • https://static.s123-cdn-static.com/uploads/4379603/normal_5fdf929586e22.pdf
    • https://cdn.sqhk.co/wujukipako/ifDBicf/descargar_ultimate_dinosaur_simulator_free_download.pdf
    • http://kataeta.club/novibudinewuzajoxutakumaxsknua.pdf
    • https://cdn.sqhk.co/girewobo/jbVbwge/wasekaverid.pdf
    • http://autolombardpro.ru/warhammer_40_000_inquisitor_-_martyr_2.08vukq.pdf
    • http://vkrowl.com/80873926205hfuh3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce0f.bin
626e1a61c6ff9242ab1ffdd2cc19c72f0f6012d704763cb545ebd7443262dbf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE0F 5236 bytes
font_01_sfnt_off0000dfc5.bin
04c9f67e3ea72bacfb9122b861db29effc4573a7f5121823efd4d7fb6e5f7772		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC5 9812 bytes

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