Malicious PDF — malware analysis report

Static analysis result for SHA-256 72e5e2381f37a5ec…

MALICIOUS

PDF

63.6 KB Created: 2020-10-28 04:11:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec2e9325ed71639d8c9a50f4ca19b89c SHA-1: 7ec7bf69bc99d073c77a324747b6d64212289d91 SHA-256: 72e5e2381f37a5ec4716369ff2c3d5c916901a215694e85243cf6c39071d577e
154 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to redirect users to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The embedded URL 'https://ggtraff.ru/123?keyword=como+se+vestian+en+los+80+y+90+las+mujeres' is a primary indicator of this malicious activity. Although no scripts were explicitly extracted, the nature of the link farm suggests an attempt to distribute further malicious content or phish users.

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://ggtraff.ru/123?keyword=como+se+vestian+en+los+80+y+90+las+mujeres
    • https://jutawalafomas.weebly.com/uploads/1/3/4/3/134316275/83aa7.pdf
    • https://revokaraso.weebly.com/uploads/1/3/4/3/134320841/nulodudaliri.pdf
    • https://zajubazo.weebly.com/uploads/1/3/4/4/134452036/f2d7a4735e8.pdf
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/038885c85ecf8f0.pdf
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/xoxiditag_tebeg_rawoz.pdf
    • https://tanoviruxejalun.weebly.com/uploads/1/3/0/7/130775892/25837.pdf
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/3532345.pdf
    • https://cdn-cms.f-static.net/uploads/4412388/normal_5f98afb539b05.pdf
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5f97e8b565d57.pdf
    • https://cdn-cms.f-static.net/uploads/4369671/normal_5f89b4551b5dd.pdf
    • https://cdn-cms.f-static.net/uploads/4366956/normal_5f880ac054a75.pdf
    • https://cdn-cms.f-static.net/uploads/4371261/normal_5f8d74e4c0363.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/14533c20-0aac-439a-b542-827e7d611a0f/fifa_street_4_pc_free_download_windo.pdf
    • https://uploads.strikinglycdn.com/files/35514318-3f7d-4bbf-bd3e-699c9e10aaf9/suwevukib.pdf
    • https://uploads.strikinglycdn.com/files/4b4f1dd5-16c3-4980-8717-613cba2d24af/toshiba_laptop_c850-p5010_review.pdf
    • https://uploads.strikinglycdn.com/files/8de4eb23-7d38-4938-9c0b-6400bbd2668d/84006999421.pdf
    • https://uploads.strikinglycdn.com/files/7ea32e32-02fc-4f5d-bdce-d07fb63e17fe/62462656111.pdf
    • https://s3.amazonaws.com/felasorarabipis/lofugoruxafi.pdf
    • https://s3.amazonaws.com/petuzutemixuvod/clinical_laboratory_tests_list.pdf
    • https://uploads.strikinglycdn.com/files/c5be8dcf-8366-4a14-916e-63c5166aa4da/oppo_a33f_flash_file.pdf
    • https://uploads.strikinglycdn.com/files/1976ca89-30be-435e-b4ba-ffc87608db3f/bibamalarijevunegugiwo.pdf
    • https://uploads.strikinglycdn.com/files/5cf5faa8-58b4-4909-97fe-d4ad8f86b80a/ratorokifam.pdf
    • https://uploads.strikinglycdn.com/files/2adac985-e6f5-4837-9bc0-44deecf35674/fovopopa.pdf
    • https://uploads.strikinglycdn.com/files/fa25f4ec-9639-4147-b3b6-2175f3622da7/62918833256.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b592.bin
8b87c44dd8977175c8736d95bfd052ce132a2d2710d69f05b76254fdbce6d912		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB592 5468 bytes
font_01_sfnt_off0000c818.bin
5aefd501212f4b77b064c9089aa2494b618498509a667d8cbc266f239e3b5f22		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC818 11820 bytes

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