Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e8d847d591f7493…

MALICIOUS

PDF

45.5 KB Created: 2020-08-18 13:42:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d4e3b9d2c174848139ae1d25c709a50 SHA-1: d3e182be70cf4198d2d437ae711fbaf3c02f1dd7 SHA-256: 1e8d847d591f7493904ffba93fc06093c48c06bc6eac013b937cacef9433edf3
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=divorce+petition+form+pdf+malaysia'. The document body, though heavily obfuscated, contains this URL and numerous other links to PDF files hosted on various domains, indicating a link farm strategy. The primary malicious link likely serves as a lure to a phishing or malware distribution site.

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.cc/pify?keyword=divorce+petition+form+pdf+malaysia
    • http://rirub.calconref.org/uploads/1/3/1/4/131454065/vamikuku.pdf
    • http://files.mikeainscoughart.co.uk/uploads/1/3/1/6/131636995/nakawewasekoluledo.pdf
    • http://wudivamar.worldsbestpinotage.com/uploads/1/3/1/0/131069899/6e04e0bf.pdf
    • https://cdn.shopify.com/s/files/1/0434/7019/2805/files/gepojanapofapafikevus.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38935964995.pdf
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/sexazogojode.pdf
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/tegimogatafavedafonefil.pdf
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/53988712939.pdf
    • https://cdn.shopify.com/s/files/1/0430/9578/5629/files/najefobojomafebawutume.pdf
    • https://cdn.shopify.com/s/files/1/0427/7927/9527/files/sepifagarigigexilugakimo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3541/files/candy_to_word_converter.pdf
    • https://cdn.shopify.com/s/files/1/0431/5319/5165/files/78645627814.pdf
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/aldous_huxley_island_free.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_off00007367.bin
71b9d8bbc4eb2cf8b03b18a74d5eda024cc39d53be4687b0f8f2922f636c9ec8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7367 5460 bytes
font_01_sfnt_off000085ef.bin
8dedcc0f8216ad54a5f7c1438318bba0e76a24377dfc69b10d26eae268947cec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85EF 10352 bytes

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