Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f0791729404b21a…

MALICIOUS

PDF

46.1 KB Created: 2020-10-19 03:47:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8d2092d67191f6767adc7afc2dd483e9 SHA-1: fd590bf919a110c1cb255ea85003c353dc499057 SHA-256: 0f0791729404b21aa3d6ff9a5b15657c721447ac4d06826bf757372111b68ee3
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 external PDF files hosted on Shopify. One of these links, https://gettraff.ru/123?keyword=download+hotspot+shield+for+android+uptodown, is identified as a malicious redirector. The document body and heuristics indicate a lure to download software, likely as a pretext for delivering malware. No scripts were extracted, but the presence of numerous links and the malicious redirector strongly suggest a phishing or malware distribution attempt.

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/123?keyword=download+hotspot+shield+for+android+uptodown In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_5f886379289bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372101/normal_5f898a8a15271.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383800/normal_5f8cc1b1d3288.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369519/normal_5f8cccdb35378.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369324/normal_5f8cca82b552c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370533/normal_5f8cb8f888e08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374686/normal_5f8cb052f0b8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366645/normal_5f87e77589c27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370768/normal_5f8a411e3706a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f882e224924c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378836/normal_5f8b85270c93f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375517/normal_5f8b5a0a20a61.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8120/6426/files/muvebutupidipapuwaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8560/4017/files/download_apk_wifi_warden_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7043/8555/files/56628844807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9980/8149/files/peeta_bread_meme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9198/3013/files/bidufuvanezedivala.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dba371c2-c736-44af-b9a7-e4c1cca95bdd/damejaxumarisotawimeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/827a1bfa-00c8-43bf-8a21-cde2e90871c6/20786380297.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B10 5220 bytes
SHA-256: 10aff8b7c931abfac3a4a2e44e4a42ee9f389c9a6bd7d7562376d53724b16060
font_01_sfnt_off00006cdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CDF 12804 bytes
SHA-256: 6548ccd09f00ea2fe95db4910f8e49ec00e252637e1401b38d540d45362f7909
font_02_sfnt_off0000960e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x960E 16100 bytes
SHA-256: 2bac0d7445fe5768be44ad7a0943804bdfa4a71883f7703ca85e4e7e3f76abd8

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