Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2c174ccbdb764db…

MALICIOUS

PDF

39.9 KB Created: 2020-10-16 22:21:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ddb951b8ac2e7ae426b275ec1dda1c6d SHA-1: 2af22f337035de30731ae1c346311b1c409082f4 SHA-256: e2c174ccbdb764db72c9ee071dba2d6500ebd91514a619e5f086acda86e9cfac
154 Risk Score

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 redirectors and link farms, indicating a malicious intent to drive traffic. The primary link directs users to 'ggtraff.ru', a known malicious redirector, which is likely intended to lead users to further malicious content or downloads. The document body's text and the embedded URLs suggest a lure related to downloading a game.

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/strik?keyword=descargar+juego+mario+kart+64+para+android In PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/6791123.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/1905261.pdfIn PDF document text
    • https://worobewunit.weebly.com/uploads/1/3/1/4/131406731/4863671.pdfIn PDF document text
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/4380478.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370055/normal_5f880f6d4978f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366034/normal_5f87492725133.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369782/normal_5f8807e3a5e9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371003/normal_5f892f6c70f9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366976/normal_5f87e9f294233.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366004/normal_5f8749d59353f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_5f8981d5a0067.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367927/normal_5f89994c4c006.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366639/normal_5f889670bf700.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373526/normal_5f89a36ae2a7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367000/normal_5f872e9569694.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366309/normal_5f872eda19e78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369141/normal_5f87c899e01c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366042/normal_5f870753966bd.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/050944df-7587-4d64-8cf1-ce25b9041b67/56208311615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/099f06dd-5d08-4f71-a702-82bd39ff6e7d/66367887501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0674e447-cf73-4303-be2a-f1d87476be5d/xunekutezozogit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f481af9-19a8-4311-8d45-e8202009cfb2/kuvokifevovinosamoxolav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3ef7bdc-0bc1-4784-bf3c-6c0878340078/rogufusibaxow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7981b95-74a4-4c49-b9da-704779c6ca80/xofivoroxirigevu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2a38c5e-efba-493f-8984-2c624edea4c2/xesuduwidunazuwelas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0bde394-c289-4ec8-bb01-3291705a5488/xosuvosositosusub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4699fc4b-3834-4c2e-9cef-d283c5870fbb/79845161541.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23b23a02-c07b-47bc-b2de-19deb8f91884/86429394445.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_off000058e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58E9 5744 bytes
SHA-256: 3d6d209356cd9829b46cdc23f22cc984b8ae40dcdde45c03ff67661f37e22660
font_01_sfnt_off00006c70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C70 10844 bytes
SHA-256: c0d6291954da4c548de72d4cc5d0a85e1e6ee3cdd13af812b7c6190074ad0933