Malicious PDF — malware analysis report

Static analysis result for SHA-256 f61d634eb0631d7d…

MALICIOUS

PDF

53.6 KB Created: 2020-11-07 02:11:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: e0acbe2f0762ad6e678a1d0c38536298 SHA-1: b322075cdd36224f63d61483871fd769003a7a55 SHA-256: f61d634eb0631d7d4d5a54cb5fc1f6dfced2374f8caf54bc221dcada4065ccbe
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://trafftec.ru/123?keyword=manual+for+p-touch+pt-90 PDF link annotation
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/xoteramerosikaja.pdfIn PDF document text
    • https://vejuvofarazaxar.weebly.com/uploads/1/3/4/3/134355137/komoxuzaxum_kuzof_rakuretewav_xafujenewen.pdfIn PDF document text
    • https://fidejilajusaxe.weebly.com/uploads/1/3/4/3/134363993/tafefokexiwub.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/98d6691a-3f94-4a1a-82a1-1b92b156433b/12172010269.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c75cea6f-7c13-4131-b230-a21677cc9cc6/50l420u_toshiba_tv_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9a0f60a-f7cf-4fa2-b60a-a09067473068/54389902646.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16e6eebd-d3df-43a0-8d81-911d02e21cf9/larebulomuninevusoban.pdfIn PDF document text
    • https://kixatipu.files.wordpress.com/2020/11/ancient_tablets_odyssey.pdfIn PDF document text
    • https://tijoneser.files.wordpress.com/2020/11/31305581676.pdfIn PDF document text
    • https://gitiwatubige.files.wordpress.com/2020/11/nifedaleni.pdfIn PDF document text
    • https://kewakarop.files.wordpress.com/2020/11/fuzedugenifugiresakam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f75fdd3-a57c-437b-9519-761abe743da5/93761240767.pdfIn PDF document text
    • https://mabijiwe.files.wordpress.com/2020/11/teniz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0D 4976 bytes
SHA-256: 733e67ff21fcfe62cb2dd74b936fe258218c91c80f1cad552c0fcfa3dda869f1
font_01_sfnt_off00008ff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF8 12472 bytes
SHA-256: 70ca2481fc77bef041256524c9d49dda473cc19107f8cacab32b92fab184d903
font_02_sfnt_off0000b9df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9DF 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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