Malicious PDF — malware analysis report

Static analysis result for SHA-256 f73690116d17509f…

MALICIOUS

PDF

42.6 KB Created: 2020-08-10 21:21:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81e9e1b63ee889344be3a84cf0c65dc8 SHA-1: d98ad8f07c431e74f31955acf7a35fca8b97bac5 SHA-256: f73690116d17509f503f45a792f333d6cb6c34a12ffdf1afcec723386d4d97df
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the malicious URL and references to PDF files, suggesting a lure to download further content. The presence of a 'download button' heuristic further supports the malicious intent.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=bruce+lipton+libri+pdf
    • http://files.wifie.org.uk/uploads/1/3/0/8/130873944/tazirabavinifiku.pdf
    • http://files.writersabodeen.com/uploads/1/3/1/3/131383934/mizetuxasopive_jamoraketerodaz.pdf
    • http://files.greatexpectationsknoxville.com/uploads/1/3/1/6/131637240/558e750e54e2410.pdf
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/59879461848.pdf
    • https://cdn.shopify.com/s/files/1/0439/3543/2859/files/sinotirodatuvikezoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/2427/7923/files/how_to_set_up_dash_button.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/rulabewurune.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wososopozabe.pdf
    • https://cdn.shopify.com/s/files/1/0434/8638/0189/files/80917204788.pdf
    • https://cdn.shopify.com/s/files/1/0433/5563/5880/files/how_to_contribute_to_a_github_project.pdf
    • https://cdn.shopify.com/s/files/1/0436/3550/7358/files/zutovutibigijurix.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/julanefiwozuxam.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/jafolulure.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/61798323273.pdf
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/73358885036.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_off00006a39.bin
b4d9c67a6388e3ca61c6a517ebb8d1f6157738e27b6f42db08dcdf95a66d89a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A39 4948 bytes
font_01_sfnt_off00007b18.bin
632fe4141958027d1500e00ba0b67d8d49ce74f121cdafcbea065d6fa855b682		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B18 10188 bytes

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