Malicious PDF — malware analysis report

Static analysis result for SHA-256 d66286cb0d7ae03b…

MALICIOUS

PDF

69.4 KB Created: 2020-07-30 09:39:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84d257609b772d4583a53695a4886ac1 SHA-1: 2e1a06157d0177a579acf80273129b7ce6a35d79 SHA-256: d66286cb0d7ae03b4b8882d9aa8361c36bdeb188342be6b142236d55dc049fa9
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one pointing to a known malicious redirector. The heuristic firings indicate that the PDF is acting as a link farm, directing users to external resources. The document body, though heavily obfuscated, suggests a lure related to 'risk management pdf journal'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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.com/pify?keyword=risk+management+pdf+journal
    • http://files.linebergersfarm.com/uploads/1/3/1/4/131483372/sidotutogiwibam.pdf
    • http://files.mjkyarchitects.com/uploads/1/3/0/8/130874238/3327863.pdf
    • http://files.thegoodfeelinglife.com/uploads/1/3/0/7/130776099/vefavaf.pdf
    • https://cdn.shopify.com/s/files/1/0437/2388/2664/files/40885020063.pdf
    • https://cdn.shopify.com/s/files/1/0431/7036/5602/files/69584155185.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/juganixunokomoponimebo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5414/5444/files/bowukojelebarileresifafo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/lajuwurut.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/muzoguganava.pdf
    • https://cdn.shopify.com/s/files/1/0433/1972/2152/files/dagixutotanowufin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90685913575.pdf
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/dezukufozofejixuju.pdf
    • https://cdn.shopify.com/s/files/1/0434/5511/9512/files/wubisoleketuwezed.pdf
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/65421336165.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_off0000d2c1.bin
071712aa7ce5e8bfe18b2058b866463106fa0cbf7f60530f7dd7e7708c9d0642		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C1 5392 bytes
font_01_sfnt_off0000e506.bin
6ea8ca02b879ab84a3b329f3131b178f54174fe0f29ccc5f5c84c4ae86bc23f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE506 10416 bytes

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