Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ac655ecfd26742…

MALICIOUS

PDF

79.8 KB Created: 2020-12-27 05:21:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b1b276c27dbcb4a375ec5dd0334603a8 SHA-1: 552538fa69ff237aad66b6c91938642c8177a545 SHA-256: f2ac655ecfd267426713a789b7fc6a557e6676e3141b8679b7371578de9adda8
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://trafffe.ru/123?utm_term=mass+effect+2+loyalty+mission+order PDF link annotation
    • https://gopogaxewose.weebly.com/uploads/1/3/4/0/134013169/6fb249709f8.pdfIn PDF document text
    • https://fekugutupufug.weebly.com/uploads/1/3/4/8/134876907/kemakeguk.pdfIn PDF document text
    • https://cdn.sqhk.co/lodesejidi/P22yFic/craftsy_classes_2020.pdfIn PDF document text
    • https://senobatupubem.weebly.com/uploads/1/3/1/4/131437889/5426e0baf5.pdfIn PDF document text
    • https://lejimawemo.weebly.com/uploads/1/3/0/7/130739028/gejaxaz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468289/normal_5fc519945f130.pdfIn PDF document text
    • https://dakubazelup.weebly.com/uploads/1/3/1/4/131454222/kujusamagexi-fuwajogasamuxip-bukobituwi.pdfIn PDF document text
    • https://jetosopotow.weebly.com/uploads/1/3/4/0/134018613/69637baee.pdfIn PDF document text
    • https://cdn.sqhk.co/bepasasa/biiURDb/call_pizza_chef_florence_alabama.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381091/normal_5f9150df24942.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/3c55c317-06e5-4c75-a1bb-7a61b8937852/45734671580.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/341591e8-efdc-4d17-b93a-12a9ac940733/78149957497.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/distribucion_binomial_negativa_ejemplos_resueltos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da5b17fc-a7d2-4778-bc3d-f666e7a60920/vokobijejewin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43c6b972-ee0a-407c-af85-ac8e1bbd2e7d/letter_to_contractor_to_finish_work.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_off0000fa69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA69 5408 bytes
SHA-256: b5cb6233c4908ef5c323f0469cbc488248e70531a693cb3c8d1d3b79b32c6845
font_01_sfnt_off00010ccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CCC 10976 bytes
SHA-256: 78c53fbb141e5c7c1c5e59609297f59bd12f7fb93829fc56753a8363c6bd7c78

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