Malicious PDF — malware analysis report

Static analysis result for SHA-256 96d78547ebc0c73f…

MALICIOUS

PDF

62.0 KB Created: 2020-08-24 01:09:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: deee06f7d317206bf9af567f07942b27 SHA-1: a1804fa61c24cc11ff7b03d3f189b06f30531532 SHA-256: 96d78547ebc0c73ff0d625e682095eda323ea957336337a04860435e4e94664b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a significant number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though garbled, contains text related to 'Admin template bootstrap 4 rtl', suggesting a lure to disguise the malicious intent. The presence of numerous links, including those hosted on Shopify, indicates a link farm designed to distribute malicious content or phish users. The ML classifier strongly flagged this PDF as malicious.

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://ttraff.cc/pify?keyword=admin+template+bootstrap+4+rtl
    • http://files.996revolution.com/uploads/1/3/1/3/131380054/xetajoxidagevo.pdf
    • http://files.leicester.church/uploads/1/3/2/7/132712015/7922920.pdf
    • http://files.coreyrobinsonmusic.com/uploads/1/3/0/7/130776822/396689.pdf
    • http://puzow.theinvisiblerose.com/uploads/1/3/0/8/130873715/wuxetevesefemunif.pdf
    • https://cdn.shopify.com/s/files/1/0433/6674/4214/files/fisanuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/0600/0282/files/xusapuzopi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9416/3109/files/urolithiasis_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0437/4714/7928/files/43002261899.pdf
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/19578243723.pdf
    • https://cdn.shopify.com/s/files/1/0433/4954/1013/files/kupow.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/36984137818.pdf
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/50448396438.pdf
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/23474898697.pdf
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/72461526292.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b627.bin
9ebac6b0ff8e57e781cea06446e4018e4c72352ebe7e982c29435b0148ef4abc
pdf-font-stream PDF embedded font (sfnt) at offset 0xB627 5320 bytes
font_01_sfnt_off0000c815.bin
a79fc87131dfd9f7a9628e7c91d375c8f6ad8da16dede986846143536664af01
pdf-font-stream PDF embedded font (sfnt) at offset 0xC815 10360 bytes