Malicious PDF — malware analysis report

Static analysis result for SHA-256 4950049932bf808a…

MALICIOUS

PDF

55.6 KB Created: 2020-10-28 21:19:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 08db8f64d2502271c8cd163d523b2a0b SHA-1: 77f3a472189e795cbf2fbec64b7662acf96efaa1 SHA-256: 4950049932bf808ac27bee1893b1d3526c37d081e819262555f749e6ae4f28ce
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector infrastructure. The heuristic firings indicate a malicious redirector and a link farm, suggesting the primary purpose is to drive traffic to malicious sites. The ML classifier also strongly indicated maliciousness.

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/aws?keyword=minecraft+nuclear+reactor+mod+1.12.2 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371003/normal_5f9913a78ffb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369182/normal_5f8a2c34c8b84.pdfIn PDF document text
    • https://rivisoni.weebly.com/uploads/1/3/0/7/130739016/9327281.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367296/normal_5f9929261730e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367631/normal_5f8bd36f405e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366331/normal_5f8df749ab3f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376870/normal_5f8b7f015aa02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374380/normal_5f8aae45b6bd5.pdfIn PDF document text
    • https://ragidogatekanex.weebly.com/uploads/1/3/4/3/134388076/0f083b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382639/normal_5f8df336f146a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f8a8be014eff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388157/normal_5f9773fada10e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367005/normal_5f872c854c1c3.pdfIn PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/bd69b7d533724a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406169/normal_5f98011e1d395.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383445/normal_5f8eaa8dc6c7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367644/normal_5f8780485effa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376380/normal_5f9900c06f5ac.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/35a99c9b-9a4f-4b03-af89-279c244d3129/86868418220.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af175516-bbda-4c4d-ad30-ca1794bc4842/20020114147.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E1 5092 bytes
SHA-256: 8b537b4d88b613824ded65c6277b555a6f596c5e8c61e4202cd5218354675fd4
font_01_sfnt_off00008616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8616 11064 bytes
SHA-256: 67c417e2d80433f84592b86cec73e83e0cdf5c4edf6170e0a974627b5ed28a4b
font_02_sfnt_off0000ab97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB97 16064 bytes
SHA-256: b2cf57f29eb3b5e0c174876c58b70ef8fadd81916e6e05a17acc225f9629e7e7
font_03_sfnt_off0000c02c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC02C 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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