Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fc075b6c5638f02…

MALICIOUS

PDF

58.0 KB Created: 2020-10-12 13:21:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 9eef56d8a4ff0586df86aac49b24ef3d SHA-1: d540bc2233b589b3e44a0023ec1e278dd9ee0c1a SHA-256: 6fc075b6c5638f023eab0c76440b722d096449c5e854989169c95e7e58229211
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://gettraff.ru/strik?keyword=computer+general+knowledge+questions+answers+pdf+bangla In PDF document text
    • http://tazitakog.krfarms.com/uploads/1/3/0/9/130969963/timogivisup_tegiximibitubi.pdfIn PDF document text
    • http://files.stdavidsashburton.org/uploads/1/3/1/3/131381518/fumifevexogatipafif.pdfIn PDF document text
    • http://files.mpmoochelleskidkare.com/uploads/1/3/0/7/130775658/vemerapas.pdfIn PDF document text
    • http://keraj.lastfrontiermusic.com/uploads/1/3/1/4/131482995/nifakukonufi-xekifexuganon.pdfIn PDF document text
    • http://files.liskigroup.com/uploads/1/3/1/6/131637409/9522854.pdfIn PDF document text
    • https://site-1040104.mozfiles.com/files/1040104/52316663948.pdfIn PDF document text
    • https://site-1041499.mozfiles.com/files/1041499/jokosekalanulija.pdfIn PDF document text
    • https://site-1038974.mozfiles.com/files/1038974/37474322867.pdfIn PDF document text
    • https://site-1038535.mozfiles.com/files/1038535/mipinidepupadijuvekoxasal.pdfIn PDF document text
    • https://site-1037828.mozfiles.com/files/1037828/81298416554.pdfIn PDF document text
    • https://site-1048190.mozfiles.com/files/1048190/68942480121.pdfIn PDF document text
    • https://site-1036724.mozfiles.com/files/1036724/xejetutel.pdfIn PDF document text
    • https://site-1039645.mozfiles.com/files/1039645/wenerejujawa.pdfIn PDF document text
    • https://site-1038882.mozfiles.com/files/1038882/64422059925.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5656a9bf-1f53-4861-88bf-75e2117da725/34245536985.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce1e8856-359b-4fdc-92a1-0cc7054ee9ca/42245506669.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2604960e-48c3-4a5c-8683-143112c2d55e/6663294644.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2242808f-4ee4-4ebf-b558-512aaccd0e3f/tibalus.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000759b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x759B 5688 bytes
SHA-256: c3852f68cde3371d34c28484a725ad57f7276d2b9b5d6105081d49fd0fd98428
font_01_sfnt_off000088e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E0 12372 bytes
SHA-256: 9bea469ad8ada0d0efe0c7ccc2f9f56fd2ede22a7c970f29a285c0246929d8df
font_02_sfnt_off0000af06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF06 13032 bytes
SHA-256: 086160e9edd094889191f1b586aaa1f1747ad6fe12b6aab4750dff69d765abc9

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