Malicious PDF — malware analysis report

Static analysis result for SHA-256 80efead4bff36f41…

MALICIOUS

PDF

58.7 KB Created: 2020-11-07 18:21:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: dd9d2a086677b8d3d0f1b38e7c6edfaf SHA-1: 5c1c5b632957188a0651d66d11b64ad28e7ade65 SHA-256: 80efead4bff36f41de874cdd1264e272f2b9aa951779dd5b659c7a6118169a2b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://traffset.ru/aws?keyword=vishnu+sahasranamam+gujarati+pdf PDF link annotation
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/aeb1d707b.pdfIn PDF document text
    • https://xuwuperozaposa.weebly.com/uploads/1/3/2/3/132303395/wuwotuwumi.pdfIn PDF document text
    • https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/7389522.pdfIn PDF document text
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/1582369.pdfIn PDF document text
    • https://fakimodixoto.weebly.com/uploads/1/3/0/7/130739088/72620.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a719f96-0b05-41fd-b070-31d8be14e750/rofetototoduwekevufodovel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2348b390-a90b-4070-8622-2a9cffbb0b32/1-99_attack_guide_rs3_f2p.pdfIn PDF document text
    • https://gesoxog.files.wordpress.com/2020/11/resagigafumifasovu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c63b045-a3e1-44ad-96e1-11fc7eed44ea/82809471197.pdfIn PDF document text
    • https://rovamidenube.files.wordpress.com/2020/11/culligan_super_s_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d804b6c-2146-4fa3-b2ac-901cdb828744/87532160317.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16db0957-5a3b-4ebc-b85e-798747d17641/tonitabazeren.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18bb6c78-f294-44d8-92d6-25ffa7e95fdd/wolemexuse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/347a574f-3a42-4184-8665-68613ee639cb/15976519226.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FFD 5464 bytes
SHA-256: 5ee95ad234cfefa9d0bcc492d7bbb4b40de870f009808d2f5b1aa1633bcadf94
font_01_sfnt_off00009277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9277 11900 bytes
SHA-256: c3eecacc69c4bd6046e9e5663ca0eb3a838a994f2e3a19986481bc8bb331abd8
font_02_sfnt_off0000b927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB927 11036 bytes
SHA-256: 5f295acd5628ce91420ea6b5e957a164ccfbda5555455c1219f74d53cf50282f

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