Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f39a8505393fc15…

MALICIOUS

PDF

67.2 KB Created: 2021-03-06 02:17:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 45c3e17b611516bba03bac74aef81e17 SHA-1: 3967e59ee6ea469a1f3b35189c9b5a66caf10f7f SHA-256: 0f39a8505393fc15663b89af76c35382e55b3268b56ffd8bd6b3961c208a374d
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://resalured.ru/award?keyword=agendas+alternatives+and+public+policies+update+edition+with+an+epilogue+on+health+care+pdf PDF link annotation
    • https://xizidedatisaxos.weebly.com/uploads/1/3/2/3/132303240/768538.pdfIn PDF document text
    • http://xevusezes.medianewsonline.com/data_structures_in_cpp_tutorial.pdfIn PDF document text
    • http://palawawez.mypressonline.com/47511774136.pdfIn PDF document text
    • http://makebugobiwuka.mypressonline.com/60253912323.pdfIn PDF document text
    • http://terugate.mypressonline.com/what_business_use_cloud_computing.pdfIn PDF document text
    • https://wikabolodaj.weebly.com/uploads/1/3/4/6/134648749/6241969.pdfIn PDF document text
    • http://remoliwagofaju.mywebcommunity.org/arnold_ehret_dieta_uzdrawiajca_bez_luzu.pdfIn PDF document text
    • http://kiparegazeratax.getenjoyment.net/zumufitixok.pdfIn PDF document text
    • http://ferafukapawap.scienceontheweb.net/boxomoraviwiwele.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tavamikilav.myartsonline.com/dofijileset.pdfIn PDF document text
    • http://vamavaremimot.atwebpages.com/gugumamisukagi.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/felomiriwufeb.pdfIn PDF document text
    • https://c0b8f06b-4e98-4d3d-89ef-2f08caba629a.filesusr.com/ugd/0c8cc8_6755851e3ddc420fbbba83935a8eff3d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/lagu_sabah_original.pdfIn PDF document text
    • https://fc060a1e-8c1d-4b7d-bafd-75f79d4c6355.filesusr.com/ugd/c0a468_ac5caa8a568c455bae9cd16b5921c5e7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/cummins_india_ltd_annual_report_2018-_19.pdfIn PDF document text
    • http://xomutojekes.myartsonline.com/fifty_shades_of_gray_songs_download_mp3.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/ios_11_android_root.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/26979358232.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5D4 5696 bytes
SHA-256: fafc07c7cb99016a96c8c78a00147e39c503cb37e9cad8947e6a0a0048794c98
font_01_sfnt_off0000d949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD949 11276 bytes
SHA-256: 2cc596770eda1dc747ac1a8b2e37ad0164dac9e4c1fc9b0cdd116053bab5e555