Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5c2aa645fe10f40…

MALICIOUS

PDF

48.7 KB Created: 2020-11-09 07:29:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 19729014e076c6ff55a112480d6760eb SHA-1: c1d390d328a564786e5f1f37bb088ca88662a6c6 SHA-256: b5c2aa645fe10f4062b36a43e53ae59df1e9a2b70cb8c1ac96e26044f9ea0634
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://traffset.ru/123?keyword=cross+stitch+needle+size+guide PDF link annotation
    • https://nabumeludofava.weebly.com/uploads/1/3/4/3/134373896/6191001.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393348/normal_5f92ad4dc2fd0.pdfIn PDF document text
    • https://vevejeda.weebly.com/uploads/1/3/0/7/130776099/1156356.pdfIn PDF document text
    • https://lemevepavakupe.weebly.com/uploads/1/3/4/7/134701524/5089199.pdfIn PDF document text
    • https://pitimonajavigo.weebly.com/uploads/1/3/1/3/131383860/9e0a66e1150f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404113/normal_5f963794b043d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379486/normal_5f8c967ebbe35.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/ordinary_men.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b07403b-a3b7-4638-8e11-43c5e2f1bd85/kobaponi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3882d19-2662-43aa-905d-4d230d3d4bac/77206334979.pdfIn PDF document text
    • https://tefijum.files.wordpress.com/2020/11/army_men_strike_cheats.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/121745e7-ee55-40ef-be8c-560d4793e55d/39625636821.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8a05c42-e5a3-46dc-8791-21634bd176bd/vegafesokopixubogodovo.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/px4_dev_guide.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEC 4944 bytes
SHA-256: 9c16adf673b3f71b3bbe8955e9be20bfd55199b42bf06e69f7780d1935027932
font_01_sfnt_off000070b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B3 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00007940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7940 11196 bytes
SHA-256: 8461dd9efd6557b5e6a1ba198e7c2ee18617c183dd274acc24b438dfb6499c8c
font_03_sfnt_off00009f71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F71 16376 bytes
SHA-256: bc7e3f6831be34686de02ce7be2a06b9f1fa2b1a298201cd6e3dc3baf4672bf7

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