Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a309f117da972a4…

MALICIOUS

PDF

83.2 KB Created: 2021-05-19 12:30:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: d7ccc43c86a1e5a7282f203d1ebc49af SHA-1: 28abed98f67875084e614b7b9f4f524ef6a9f846 SHA-256: 0a309f117da972a4c59297c50c81381a5317ec1685f7e32ab36efaf196be482c
156 Risk Score

Malware Insights

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

The file was detected as malicious by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan. The PDF contains a large number of external links, indicative of a link farm or phishing attempt. The embedded URL 'https://ponafet.ru/strik?utm_term=learn+spoken+arabic+in+dubai' is a primary indicator of the malicious intent to redirect users to potentially harmful content.

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://ponafet.ru/strik?utm_term=learn+spoken+arabic+in+dubai PDF link annotation
    • https://buxipowuno.weebly.com/uploads/1/3/4/3/134353207/dowepujis-vutesifabuwubil-sivejakitanaz.pdfIn PDF document text
    • https://befofevaz.weebly.com/uploads/1/3/0/9/130969220/juves.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487623/normal_6052e93f2f4f8.pdfIn PDF document text
    • https://pitamiled.weebly.com/uploads/1/3/4/0/134098016/kigufedix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500883/normal_606e8c8abcd6f.pdfIn PDF document text
    • https://vazexisosumufil.weebly.com/uploads/1/3/4/4/134465451/zinewe_gudapusitiper.pdfIn PDF document text
    • https://jowovodepavilim.weebly.com/uploads/1/3/4/6/134651336/kaparowanulixaneni.pdfIn PDF document text
    • https://lewuseloti.weebly.com/uploads/1/3/1/4/131437615/9d0d5b284c1f890.pdfIn PDF document text
    • https://dakokegeter.weebly.com/uploads/1/3/4/7/134723120/vumufema_womuvado.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384649/normal_5fe1bd6e09fab.pdfIn PDF document text
    • https://zemizipip.weebly.com/uploads/1/3/4/0/134098502/1998803.pdfIn PDF document text
    • https://pukadove.weebly.com/uploads/1/3/4/6/134694451/9798561.pdfIn PDF document text
    • https://sarisiwubaj.weebly.com/uploads/1/3/0/7/130739508/fuguzazovuguk.pdfIn PDF document text
    • https://petugaxuw.weebly.com/uploads/1/3/5/3/135397026/dununoxi-nobifozo-zixiruwarinev.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/tetofamuxulil/icom_706mkiig_mods.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/adler_mannheim_spielplan_2019_20.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/jolokuti.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/bisejaju.pdfIn PDF document text
    • https://s3.amazonaws.com/wupuxus/64288049803.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/total_gym_1100_owners_manual.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_off00010893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10893 5180 bytes
SHA-256: 366dd578ce0d71d12ac1aa9d96b8c41037d8b5d24956db3b229a7ba5f169d8de
font_01_sfnt_off00011a3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A3F 11028 bytes
SHA-256: 46092dffee367482b71577ed2a10d08a00c0f08af57bcd2d739d0d1c53193db4

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