Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbde7331968f4b10…

MALICIOUS

PDF

42.1 KB Created: 2020-08-04 07:45:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffb90ea6226142862349e446783c88ed SHA-1: df2c35219a1a70cfb4d8f3f12cfc757326bbb384 SHA-256: fbde7331968f4b10c41d68df3861aa6b088cbd050f4c6bd2e22d7f382b887eba
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=monodentate+ligand+pdf'. Additionally, it exhibits a PDF link farm heuristic, with numerous embedded URLs, many hosted on Shopify. The document body contains garbled text but also includes the same malicious redirector URL and several benign-looking Shopify PDF links, suggesting a lure to a malicious site under the guise of providing PDF documents. 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=monodentate+ligand+pdf
    • http://rodulami.angaaefonu.net/uploads/1/3/0/9/130969656/1111379.pdf
    • http://files.northforkpoa.org/uploads/1/3/2/7/132712127/dekan.pdf
    • http://rasoj.scentsationalpamperingaccessories.com/uploads/1/3/1/4/131407552/3455382.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23063093424.pdf
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/57442784856.pdf
    • https://cdn.shopify.com/s/files/1/0432/4347/1008/files/dinotizujosapenivi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/perewowidu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2349/0457/files/gijewuruwatabefe.pdf
    • https://cdn.shopify.com/s/files/1/0433/6526/9669/files/25667217574.pdf
    • https://cdn.shopify.com/s/files/1/0436/0772/0093/files/javexutonipexaravisinajox.pdf
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/balibi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3572/8794/files/diweputofisabad.pdf
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/jemudali.pdf
    • https://cdn.shopify.com/s/files/1/0432/0316/6369/files/53642502661.pdf
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/31234022081.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_off00006786.bin
6ea743ae1fe4c027cfa128bdf39d2b0cc03bd0a2ecd491be5df38eebbbcd4143		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6786 4940 bytes
font_01_sfnt_off0000787e.bin
9fda61513d3a18bf83902059083bc33c6f171d0c308f7ce105d58004b4bc5f64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x787E 10140 bytes

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