Malicious PDF — malware analysis report

Static analysis result for SHA-256 414e68214958d98f…

MALICIOUS

PDF

69.3 KB Created: 2020-11-19 06:00:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 8090f82b5612c1bcfb99777a494f15f7 SHA-1: 4481a369b26992073f1eb19958b68b9f5841d135 SHA-256: 414e68214958d98ff128c326375e82c37a3cfd5d346c0cc3c4d4a5698150c1ee
214 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external websites, suggesting a link farm or phishing attempt. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that at least one of these links directs to known malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'Mla cite website generator', likely a lure to encourage clicks on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://gettraff.ru/123?utm_term=mla+cite+website+generator In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388067/normal_5f8ebb800474b.pdfIn PDF document text
    • https://dibekepoxifepef.weebly.com/uploads/1/3/4/5/134587143/8161451.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383921/normal_5faf8c1939ce3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414695/normal_5fb2f482595e3.pdfIn PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/e0eeb842ca1bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407562/normal_5fb2ad0a5d438.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/c1a61e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388181/normal_5f8dd44e050a4.pdfIn PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/dexir-pokigosujuximuz.pdfIn PDF document text
    • https://lamosovi.weebly.com/uploads/1/3/4/6/134600354/fepunojigigut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419430/normal_5f9b7b7cbfaaa.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/tesotiwapax/fireje.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/chennai_express_movie_tamilyogi.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/vitutoxopu.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_off0000d24a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD24A 5204 bytes
SHA-256: bf150e85779caad9a772083abe44f90acac9619dbfc4905313273e47431a3820
font_01_sfnt_off0000e42a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42A 10500 bytes
SHA-256: 6bfaede73c454acd87c704a2e181180693e0bef13ebdad8ce45facb62a911cf2

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