Malicious PDF — malware analysis report

Static analysis result for SHA-256 8479a2c2e3906b32…

MALICIOUS

PDF

49.4 KB Created: 2020-08-30 01:45:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7dc8c43988936e18e60afeb432cf781b SHA-1: 3446029df39d47eda312ef28514f6be096651038 SHA-256: 8479a2c2e3906b32fce2c0786ef23fe7d7c0aa3d382af637564fd1ab18979a58
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM indicates a large number of external PDF links, likely for SEO manipulation. The primary malicious IOC is the redirector URL, which is likely used to lead the user to a malicious site. The document body contains garbled text but includes the malicious URL and several benign-looking PDF links.

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.me/wix?keyword=redemption+cemetery+salvation+of+the+lost
    • https://static.usrfiles.com/ugd/822ecd_ef07bf3741d7474b921e51a5f7e71fce.pdf
    • https://static.usrfiles.com/ugd/0df15e_74685e69a69b45278336bd239f22aefe.pdf
    • https://static.usrfiles.com/ugd/07ef24_88cd7f523d7a46009428d1a4ef162d6d.pdf
    • https://static.usrfiles.com/ugd/a382ee_6bd53d99b2dd4006adfc5959bca2c6cf.pdf
    • https://static.usrfiles.com/ugd/b8c837_e74b192ddd1b4f3e8f1d9e7986e3cbf2.pdf
    • https://cdn.shopify.com/s/files/1/0436/2013/9170/files/12687650241.pdf
    • https://cdn.shopify.com/s/files/1/0431/7092/2652/files/apricot_clothing_size_guide.pdf
    • https://cdn.shopify.com/s/files/1/0463/2562/9085/files/clash_of_clans_hile_apk_viyaza.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/pedejadif.pdf
    • https://cdn.shopify.com/s/files/1/0465/1512/6422/files/gerozojufekofeki.pdf
    • https://static.usrfiles.com/ugd/b8c837_a8d42a2cdc334486ab30289d205be209.pdf
    • https://static.usrfiles.com/ugd/b8c837_81e8c549e290426da2139fed73d8dbea.pdf
    • https://cdn.shopify.com/s/files/1/0439/7151/0430/files/38335810529.pdf
    • https://cdn.shopify.com/s/files/1/0438/1802/5117/files/circular_economy_eu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5960/9753/files/taxavuvepikulef.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_off000074b1.bin
2ea53fc95108c70453e12866f43ab03de0380b266fdf2f18969eb7cd389c486c
pdf-font-stream PDF embedded font (sfnt) at offset 0x74B1 5352 bytes
font_01_sfnt_off000086c1.bin
c5c14abf51b9fa842b015e782a8c4b41908c01c2b81b1c050a054b1a99c20d62
pdf-font-stream PDF embedded font (sfnt) at offset 0x86C1 10540 bytes
font_02_sfnt_off0000aa78.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA78 4324 bytes