Malicious PDF — malware analysis report

Static analysis result for SHA-256 58ffde843f4ca1e1…

MALICIOUS

PDF

49.1 KB Created: 2020-08-22 17:11:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c76d5b4e2f90f0c7be427848946d121 SHA-1: ad5ebc3cab492486c870a0b73a802613a57eeb15 SHA-256: 58ffde843f4ca1e1cb7e8609fb0d397391bbc4436290b19ba4f1d101dec3a953
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, with one critical heuristic identifying a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=spending+diary+template+excel', suggesting a lure to download or visit a malicious resource. The presence of numerous Shopify-hosted PDF links further indicates a link farm used for SEO poisoning or traffic redirection.

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=spending+diary+template+excel
    • http://files.fabsuffragefranchise.com/uploads/1/3/0/7/130776272/53e162a6a798da.pdf
    • https://cdn.shopify.com/s/files/1/0431/6948/0866/files/ridukel.pdf
    • https://cdn.shopify.com/s/files/1/0437/5805/9671/files/29276838722.pdf
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/filararerovexenujavilalo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1553/6793/files/51264445859.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/befuxaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/8072/8224/files/ropejozuxokab.pdf
    • https://cdn.shopify.com/s/files/1/0433/5766/7487/files/hybridization_in_chemistry.pdf
    • https://cdn.shopify.com/s/files/1/0431/4749/3536/files/majire.pdf
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/nakezupimamunuxolivuj.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/57361489543.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/us_map_with_capitals.pdf
    • https://cdn.shopify.com/s/files/1/0435/0948/1626/files/bazobosigerepawobunefase.pdf
    • https://cdn.shopify.com/s/files/1/0439/2943/6315/files/44409832079.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007387.bin
5e3a2e84ed0c46a1d4a157eba3e40a92542787cb5fae4af7d0aca701e259e4fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7387 5164 bytes
font_01_sfnt_off00008502.bin
b15089be8f5eda637066ab3f93f2d776fb3e6caf5b30279123d41585853edf15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8502 10744 bytes
font_02_sfnt_off0000a93a.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA93A 4324 bytes

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