Malicious PDF — malware analysis report

Static analysis result for SHA-256 01cff703457130bb…

MALICIOUS

PDF

71.5 KB Created: 2021-03-09 00:46:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 377daf76b2d416c913338503ad6da3eb SHA-1: db1d73c6a13c6e3260d8cfbf9d208c0d99184b07 SHA-256: 01cff703457130bbbd238786ae3ec2c940befa8030884dfe7b57cf5c2d3aecc4
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/award?keyword=lic+new+jeevan+anand+policy+details+in+telugu+pdf In PDF document text
    • https://tuzisufuga.weebly.com/uploads/1/3/4/4/134458332/xutoriw-zumatugiwox-xebikusufosimo-zoxidakiver.pdfIn PDF document text
    • https://naketutetan.weebly.com/uploads/1/3/4/6/134660231/7923062.pdfIn PDF document text
    • https://wilivaja.weebly.com/uploads/1/3/2/6/132682565/a09fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497372/normal_5ff40c3956064.pdfIn PDF document text
    • https://piturerakilapes.weebly.com/uploads/1/3/0/7/130775197/748489.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369927/normal_603ca95777631.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389354/normal_5ffb4a8576b58.pdfIn PDF document text
    • http://urologo.store/cub_scout_bear_bookai22k.pdfIn PDF document text
    • http://leyloften.online/the_sufi_book_of_life48qxa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427097/normal_5fe54899b896d.pdfIn PDF document text
    • https://jowetetezuvam.weebly.com/uploads/1/3/4/7/134717416/282e1791ed.pdfIn PDF document text
    • http://ehaberdevlet.com/3304356936470gj6.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/lezopobigeza/vewenifunofike.pdfIn PDF document text
    • https://59cf682b-6680-4a08-8b8d-0472bab64ef7.filesusr.com/ugd/d7d6cd_eb54e497947a44efb5e600847e5ad433.pdf?index=trueIn PDF document text
    • https://f578e110-fe3e-4c8a-b9c8-f5e8ac4de0f1.filesusr.com/ugd/f64db8_be7a08e05430483f888fa374a4ca40a8.pdf?index=trueIn PDF document text
    • https://95049c82-e412-4913-a0b0-e03e83d5170a.filesusr.com/ugd/127d6e_c81f75a1d29f44658996f98e565a798b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/23725273461.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/71749004984.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_off0000d552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD552 5500 bytes
SHA-256: 34bf545c87ff6e059fa2458a61afa4cebbd23f32ae4c63585d0003c555411af8
font_01_sfnt_off0000e84f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84F 12644 bytes
SHA-256: b7f9ca5c70c9fa3704ec4802554a8dadb4b3b0ac6b6b2a7417e6503d7710e725

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