Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbf82575461198ae…

MALICIOUS

PDF

39.7 KB Created: 2020-11-06 18:02:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 16f29af447c132aca68661e93f6def5a SHA-1: 9d9090f07fe037628ffd9fc2509bf2adfbe41531 SHA-256: dbf82575461198aee15f3e4f7e76c01afcc7e73fa7cdb392ca27077e55df5c56
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafficel.ru/aws?keyword=how+are+euglena+and+paramecium+similar PDF link annotation
    • https://sepenunaxob.weebly.com/uploads/1/3/0/7/130776074/8614006.pdfIn PDF document text
    • https://lupolaluxu.weebly.com/uploads/1/3/2/6/132681144/0ad5c642a8db6.pdfIn PDF document text
    • https://bezebaterizijir.weebly.com/uploads/1/3/1/3/131384714/7552393.pdfIn PDF document text
    • https://mevamakokuvafas.weebly.com/uploads/1/3/4/0/134040887/lopepizedizaga_kajofesesalet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410006/normal_5fa00479938ac.pdfIn PDF document text
    • https://dojufewuwi.weebly.com/uploads/1/3/4/2/134235401/ratasowopetiv.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/ba48a08a-979f-46d5-bea0-fdd7a0cec2ca/28583018476.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d8830a4-bb69-4277-8657-c9ccc0a8e2cf/64193218770.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/biology_final_exam_review_guide_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/malformaciones_congenitas_definicion.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/alfa_romeo_156_selespeed_manual.pdfIn PDF document text
    • https://mutozofe.files.wordpress.com/2020/11/67728004733.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/support_vector_machine_kernel.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/sequoia_national_forest_map.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_off00005bd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD7 5448 bytes
SHA-256: 24fab0bf537bde6d9ecbb049ab099c8e9bc3f039355ebd6e2c88bb90a99babc1
font_01_sfnt_off00006e58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E58 10388 bytes
SHA-256: 85fa386f6e37697bfd27f2ef0fc0e5a9694a5a6207882d9a9bf25b614bf70269