Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c754c65cf60ff89…

MALICIOUS

PDF

72.3 KB Created: 2021-01-20 03:27:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 81c7eb02eac011ed465786672687d367 SHA-1: 7ecbf4fe4bbf2bebb519ad45690ba313d3bf8063 SHA-256: 5c754c65cf60ff89d3162dc30ac5fda920d6c58ba211684a43d75695587e7c65
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://druttle.ru/infin?keyword=atomos+ninja+assassin+manual PDF link annotation
    • https://dugubutufafug.weebly.com/uploads/1/3/0/7/130775350/dibipaxo-rakapesasisebid-rakoma-nabasowixez.pdfIn PDF document text
    • https://roguraluvi.weebly.com/uploads/1/3/0/7/130776180/kotagujalek.pdfIn PDF document text
    • http://jisijopimif.66ghz.com/44420991031.pdfIn PDF document text
    • https://sulakupewub.weebly.com/uploads/1/3/1/0/131070695/12ee5e.pdfIn PDF document text
    • https://lerasakob.weebly.com/uploads/1/3/2/6/132682990/pominolug_lubosefi.pdfIn PDF document text
    • https://site-1246781.mozfiles.com/files/1246781/75279284620.pdfIn PDF document text
    • http://rorezorejadij.iblogger.org/zoxad.pdfIn PDF document text
    • https://site-1171656.mozfiles.com/files/1171656/cute_background_pics_for_iphone.pdfIn PDF document text
    • https://tubekari.weebly.com/uploads/1/3/1/6/131636965/xifoxoxiduvegug.pdfIn PDF document text
    • https://ramageputa.weebly.com/uploads/1/3/1/6/131637054/pinutosobagumidej.pdfIn PDF document text
    • http://jokebixa.22web.org/ocado_warehouse_fire_report.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tokofelutuj.epizy.com/letter_y_worksheet_for_kindergarten.pdfIn PDF document text
    • http://mafakizukizunof.epizy.com/34300618297.pdfIn PDF document text
    • http://madukavinoxonal.epizy.com/rscit_answer_key_2019_march.pdfIn PDF document text
    • http://tivapatovike.epizy.com/92601298126.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_off0000d3a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A9 4800 bytes
SHA-256: 896dcedcf14ff79db057f5c0bf86a5eabb0a540dc83fb0726088a0ac94f63288
font_01_sfnt_off0000e3e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E6 15620 bytes
SHA-256: 07d9e3dff47e20bbab59bc4317f4397a378df507c20b748f4f4da4a0fb27e997