Malicious PDF — malware analysis report

Static analysis result for SHA-256 127d2e4d9fa2a3bb…

MALICIOUS

PDF

38.0 KB Created: 2020-11-05 05:43:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 88a3725a1c898a8bab474fd26b2a6b64 SHA-1: 9b57a4e91648853df872c6d25ce9e5619ce7e2a7 SHA-256: 127d2e4d9fa2a3bbbc094860cdcd1a5b5d7cf6c8e149b4bd8de1c02dba4e23b0
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://gettraff.ru/strik?keyword=j2me+games+reddit In PDF document text
    • https://sinevojixataxer.weebly.com/uploads/1/3/4/1/134131740/1510931.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383704/normal_5f9ceeabae1ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422640/normal_5f9b8df53f8c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393761/normal_5fa119fe2c709.pdfIn PDF document text
    • https://rikisuluwujufa.weebly.com/uploads/1/3/1/4/131452938/9746435.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365539/normal_5f8756afbdf34.pdfIn PDF document text
    • https://gazitagoro.weebly.com/uploads/1/3/4/0/134016873/385d496ceace3e.pdfIn PDF document text
    • https://nagigezivozitos.weebly.com/uploads/1/3/4/3/134340852/855c7e29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407983/normal_5f9c9941f3b4a.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/metubevozisul/coil_on_plug_ignition_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e10e9f4-8ea8-4d25-a123-a3085de864ec/80822975953.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8114f6cd-db07-4651-875c-570389a93695/53984901477.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_off0000428b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x428B 5232 bytes
SHA-256: 740354c8908ca58553ca80aa01b8f60f21ba92bda74958111b76966635b5c91a
font_01_sfnt_off00005439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5439 9668 bytes
SHA-256: bd2c973d772dc81a12a867516190f2a19749718a3e13c5dcd69abca84aa86a67
font_02_sfnt_off0000757a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x757A 16416 bytes
SHA-256: b1a7be413c16529a3efb36790fb1ede9dbc47b99b1dcf399fe3ce16d881d47c9

Open this report in the interactive analyzer, or submit your own file for analysis.