Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c07fca953a75be6…

MALICIOUS

PDF

67.3 KB Created: 2021-02-15 11:28:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 656a6c79e9143e2f360e8ca5eea43a28 SHA-1: 243f6546bf142c90e8609b33f8b29f04c268b993 SHA-256: 2c07fca953a75be64178204f5d4af40768c3ffd7927db379ce9d172244a2b219
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious phishing content. It contains a large number of external links, many pointing to suspicious domains, suggesting a link farm or phishing lure. The presence of embedded URLs and the PDF structure indicate an attempt to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://maypoin.ru/strik?utm_term=minn+kota+riptide+55%252Ft PDF link annotation
    • http://idealslim-ordina.site/tukaxexefaxidiwoba3xwhp.pdfIn PDF document text
    • https://cdn.sqhk.co/tijinujul/fgiZqNc/49281029438.pdfIn PDF document text
    • http://talakam.space/80753450064sm3dz.pdfIn PDF document text
    • https://jiwebatije.weebly.com/uploads/1/3/3/9/133997557/9670965.pdfIn PDF document text
    • https://cdn.sqhk.co/muvetowiripa/gdf0jhO/valanilasipirukesagiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368758/normal_6029e3d7d85b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485703/normal_5ffbb29a01373.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/JIBpYhj/vowalipatefamomubafaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487192/normal_5fe4d27a5477b.pdfIn PDF document text
    • https://xedutorapul.weebly.com/uploads/1/3/0/8/130813372/gexiwojemisosoti.pdfIn PDF document text
    • https://biwomewiwuxe.weebly.com/uploads/1/3/4/1/134131409/3512299.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477400/normal_5feaff141a91e.pdfIn PDF document text
    • https://vapaniwagivu.weebly.com/uploads/1/3/4/4/134442769/tabejiseluxusuza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/berberine_metformin_pcos.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/telecharger_avast_antivirus_gratuit_pour_android.pdfIn PDF document text
    • https://s3.amazonaws.com/widetunipet/27652727765.pdfIn PDF document text
    • https://s3.amazonaws.com/jugobimuraje/660_bus_timetable.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/suzib.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_off0000cb97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB97 4972 bytes
SHA-256: 7ff1e9019b024120a7389c498f74a0aa6151350ca8c0f0961b3bb6363fbcc0a4
font_01_sfnt_off0000dca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA4 10180 bytes
SHA-256: c8d189bbdbe45cd87c8ba433cf88b9ba78d1273a04371fa6d25f02a048c2de94

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