Malicious PDF — malware analysis report

Static analysis result for SHA-256 13400425fbdf6c5b…

MALICIOUS

PDF

40.0 KB Created: 2020-10-15 02:57:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 17fab976f311d979aac597c82597611d SHA-1: 6cdeeac1fb5584a683b61147f658e57a91f02b59 SHA-256: 13400425fbdf6c5b3e0de374033c43b319226117bcdde0d87dd8027b7aa3e15c
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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.
  • 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://ttraff.link/pify?keyword=manual+motorola+moto+e5+plus In PDF document text
    • https://site-1039600.mozfiles.com/files/1039600/classifying_monocots_and_dicots_worksheet.pdfIn PDF document text
    • https://site-1039957.mozfiles.com/files/1039957/zekisifa.pdfIn PDF document text
    • https://site-1042657.mozfiles.com/files/1042657/35778482769.pdfIn PDF document text
    • https://site-1036997.mozfiles.com/files/1036997/50216060571.pdfIn PDF document text
    • https://site-1040092.mozfiles.com/files/1040092/gelubo.pdfIn PDF document text
    • https://jedarixires.weebly.com/uploads/1/3/0/9/130969076/1275853.pdfIn PDF document text
    • https://rutaluxunenore.weebly.com/uploads/1/3/0/7/130740368/20e96c8807.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365545/normal_5f8778d7e4716.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366381/normal_5f8736951b0c5.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/ca2856e3-dab0-4d03-81de-a2e82a8aab85/rekepumelaveguruzenawu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81c641f4-9cd6-401c-afdb-7ee9c2b92652/76845895472.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9f42ba6-e54f-4e43-9e71-08d364f690e1/13675952185.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78ea9d07-f3b2-4470-b0a4-0aaf6f2a3635/redezukonisorerisaped.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a303e6d-7111-46b1-bf03-3729146f5760/60043595256.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26913468-c758-4e91-b753-3ae44b413ef2/17108373376.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ca4e714-e82d-4934-8a6e-4aedc51b862e/15285374100.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8c6edbc-edd8-4a59-98e8-4fb8ed922be0/16479292035.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B8C 5092 bytes
SHA-256: af0b250596494c9f78b5bd59372cfa3b38c681f53e36a677d02a6e40dde57028
font_01_sfnt_off00005cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC7 9556 bytes
SHA-256: f3bc64a8dd70a321afc75db78422731f5cd657653603e9d8af5fadb8d633d59d
font_02_sfnt_off00007db4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB4 16164 bytes
SHA-256: b148ccab97c8e9db08880ff5c1fd54e04398b9c3eea924e5ac6f601b755b2eeb

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