Malicious PDF — malware analysis report

Static analysis result for SHA-256 46f29d12fa60e879…

MALICIOUS

PDF

73.9 KB Created: 2020-10-26 21:05:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: a074e8db122abd7a7bd0f3cbcb12227b SHA-1: e2fc89facc29ac01e768c5e317b8dc52835c64de SHA-256: 46f29d12fa60e879429d0b13b5e29c4945dfaf936ab1d251442e6854c9ea6386
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Uncharted 4 trophy guide chapter 11' and a URL that matches the malicious redirector, indicating a lure to trick users into clicking the malicious link.

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=uncharted+4+trophy+guide+chapter+11 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384308/normal_5f8e5b3eab83e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5f90ba31e1622.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403143/normal_5f94ffb3abc34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417023/normal_5f955059212f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380090/normal_5f8efb17107b9.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/25ff3b5f-8cd0-4797-9a31-48d06dcc4999/toxaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7eb9f7d-dcd5-4713-ad40-c32cd402da55/keneduz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17b69992-6189-44f2-8c25-98772c2ed046/votekuxadekot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3272/2599/files/lepasejuzofuwu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64d0b0fa-f3ee-4017-95f6-f85ab46efbbd/fusokujuxixanegale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a2d618b-89ee-4e93-8024-918f7633ffa9/sapiwidimitiwidixiladex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20f7e3ab-b9fc-4524-be81-36c555016117/deadpool_pelicula_completa_espaol_latino.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26bdb01f-1386-42ce-85bf-feb23bbfe841/xiwetogizomuguripupidel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/789be2f5-eaf5-4de9-9fee-fb9bcefb8731/51164303325.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/lijetijoxazujifa.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/animals_and_their_babies_flashcards.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/88220983140.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/elaboracion_de_talco_antimicotico.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/18194374742.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_off0000e2f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F7 5360 bytes
SHA-256: a8062b0f9e9fe3088be69b43ce5455d47fd77deda2d7798c96a99a8b64f5b5fa
font_01_sfnt_off0000f52f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF52F 10912 bytes
SHA-256: d67a5ba37eabb06bfba04cfbf31e0e1250b7f3d4afbadc4ca66f66833d5783fe

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