Malicious PDF — malware analysis report

Static analysis result for SHA-256 d50285d02ad09653…

MALICIOUS

PDF

46.5 KB Created: 2020-08-03 14:45:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b6b97b81a3d50098d831a32b0f40564 SHA-1: 534936350eb9f449599ff5c6bf3d07d9607a44fc SHA-256: d50285d02ad09653cf896567ee2d5d887bef0d51be5d400c5efde1e5434910d8
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=diu+mirena+efectos+secundarios+pdf'. The heuristic firings indicate this is a link farm designed to redirect users, likely to malicious content or phishing sites. The document body, though heavily obfuscated, contains keywords related to the malicious URL, suggesting a lure for users searching for information on 'diu mirena efectos secundarios pdf'. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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=diu+mirena+efectos+secundarios+pdf
    • http://files.stealthentertainment.net/uploads/1/3/2/6/132695556/587095.pdf
    • http://files.thewinstonreview.com/uploads/1/3/1/8/131856160/pinozosakixid.pdf
    • http://files.gettysburgchambermusic.org/uploads/1/3/1/8/131872087/633458.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/vobixowalu.pdf
    • https://cdn.shopify.com/s/files/1/0440/7758/0453/files/it_ebooks_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3428/0099/files/68108674261.pdf
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/zelda_twilight_princess_hd_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7261/files/99585978178.pdf
    • https://cdn.shopify.com/s/files/1/0436/4327/3369/files/dekijovejijozaja.pdf
    • https://cdn.shopify.com/s/files/1/0439/0476/2011/files/xadulukisoso.pdf
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/30966623217.pdf
    • https://cdn.shopify.com/s/files/1/0437/0785/9096/files/85421142713.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/tekigawumelo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0741/files/43116244911.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/25575718035.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_off00007501.bin
e996cc08c74086d36b54bcdffeae95da8f2abd2efaac29a6fadef50232de9eac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7501 5268 bytes
font_01_sfnt_off000086df.bin
8c3dda29678f3f88110d0a4377744eaceb4ca484e098d4937ac1e9fa6fe6e49f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86DF 11376 bytes

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