Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5f2bf9c9bd53b7f…

MALICIOUS

PDF

39.5 KB Created: 2020-10-08 07:54:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d70762137a98c10ed8efed07b0ac2cc5 SHA-1: 8ab51441eafe9dc6f37e3fc9d6d1609ec070b8a7 SHA-256: f5f2bf9c9bd53b7feb6ce80d9f30df69f2bd35cccb0b0d1a9e8e94adb8df30b5
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://ggtraff.ru/strik?keyword=movimiento+circular+uniformemente+variado+pdf In PDF document text
    • https://site-1039730.mozfiles.com/files/1039730/13161391555.pdfIn PDF document text
    • https://site-1043805.mozfiles.com/files/1043805/jepedateberogirogu.pdfIn PDF document text
    • https://site-1036731.mozfiles.com/files/1036731/zumarirililevoxozokiv.pdfIn PDF document text
    • https://site-1038783.mozfiles.com/files/1038783/72464351244.pdfIn PDF document text
    • https://site-1039694.mozfiles.com/files/1039694/32834423389.pdfIn PDF document text
    • http://gorubotun.poweruperasmus.com/uploads/1/3/1/8/131856456/3422437.pdfIn PDF document text
    • http://files.artbylatiolais.com/uploads/1/3/1/6/131637309/176158.pdfIn PDF document text
    • https://site-1044027.mozfiles.com/files/1044027/jubunidemagidat.pdfIn PDF document text
    • https://site-1043704.mozfiles.com/files/1043704/21177642468.pdfIn PDF document text
    • https://site-1043653.mozfiles.com/files/1043653/zumozenafojuvaro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/nba_2k17_apk_mod_free_download_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5815/3640/files/pasquill-gifford_equation_h2s.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5561/8977/files/sun_worksheets_high_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6386/7552/files/lego_corner_garage_alternative_build.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_off00005a65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A65 5188 bytes
SHA-256: 57ec96703e956d7cf8ca621a4595b19525b36ce5f380eb8315132d75bd3adc4a
font_01_sfnt_off00006c0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0D 10680 bytes
SHA-256: 97585488a1545b12f3bda118169f853f7a1f2616a41dd2b60c5f73c9d5b570ff