Malicious PDF — malware analysis report

Static analysis result for SHA-256 d177a05654a5f14c…

MALICIOUS

PDF

52.9 KB Created: 2020-10-18 09:52:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4d828ed175cdefc12262ea7f1f782512 SHA-1: af2fa1c7bfb1f687f51b11f1236e22176a076b53 SHA-256: d177a05654a5f14c0586615331e7371d724446bf87d874d03e213ce0a0470a57
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, cctraff.ru, which is likely used to distribute further malware or conduct phishing. The document also hosts a large number of external PDF links, suggesting a link farm designed to attract traffic. The ML classifier strongly indicated maliciousness, supporting the conclusion that this PDF is part of a malicious campaign.

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://cctraff.ru/strik?keyword=ranged+fighter+5e+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366371/normal_5f88ab0bc412a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369796/normal_5f8a2e70decf9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368949/normal_5f8bd8e481d1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367947/normal_5f88f06ab5c9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f871cf820eeb.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/ff51353ffd7b.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/kozusomotugug_kenuluxe_varuwitarimov_kuvixemas.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/vigirupiruwovilav.pdfIn PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/ratatuwogakokovox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/3c28f1ad-eba8-499a-92a6-424d223cff5a/ponaruguxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d60a9f7e-b27f-4b83-9635-af0c9d29d71f/genel_kimya_vize_sorular_ve_cevapla.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2fd5092-c4ff-42da-850f-f4689243194e/64288730984.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/544c3983-6a12-42ea-b218-c89b52ebc7d1/wofidexufipubitavepafan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca0d1fa1-6e14-4028-b32a-03222e8b649a/vududo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e7167c9-3b5e-48c1-ad43-0246fabfac59/dezumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c15c2cb-2e5f-44a0-a5d2-fc6edd59ccc3/jidivarepiluxiwawodepufi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fcb93b7-cf1a-4261-a464-142655d48b25/vojitekini.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e35f8879-fe64-4d49-b575-e3ceb2ef61ef/kiwuwutadowixegiwometolez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52bb64ce-6571-40f7-b65f-7f4bd26cebb1/xirova.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000084b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B3 4860 bytes
SHA-256: c9975784e79b68085fefd48fe4220a1447070af1742a360d140d85d0b9fc7ae7
font_01_sfnt_off00009534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9534 10220 bytes
SHA-256: 096f7d4cdacfa6c18633dbee274e9d8b9746f08a85a1f54ee086c04a6801b7ad
font_02_sfnt_off0000b833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB833 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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