Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6e799ccf936cf87…

MALICIOUS

PDF

47.1 KB Created: 2020-08-24 13:20:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 712b571df80d054759a931602b39cba4 SHA-1: c644d7c822aeb651f9d65e4190a467393b4a5198 SHA-256: c6e799ccf936cf8791bdf2f032a06a91fd501d1ff24fa13c0fa6c51c11449402
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.cc/pify?keyword=nice+guidelines+acute+decompensated+heart+failure'. Additionally, another critical heuristic indicates a PDF link farm, with many links hosted on shopify.com and other domains. The document body, though partially corrupted, contains the same redirector URL. The primary attack pattern appears to be the distribution of malicious links disguised within a PDF document.

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=nice+guidelines+acute+decompensated+heart+failure
    • http://lowid.jenniferinafrica.com/uploads/1/3/2/7/132740978/refalawukul_gowanederi_muvab_kexip.pdf
    • http://zosaguw.wolfridgearchery.org/uploads/1/3/0/7/130738511/judiputelexebi_sasuxut_janusubekovogob.pdf
    • http://files.ilcpr.com/uploads/1/3/1/3/131378852/55423fd01ad.pdf
    • https://cdn.shopify.com/s/files/1/0431/2324/5216/files/rifezemimaz.pdf
    • https://cdn.shopify.com/s/files/1/0435/6925/0463/files/nemarekanuzamoxurawoliset.pdf
    • https://cdn.shopify.com/s/files/1/0434/5485/7369/files/gogaladofep.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39086675177.pdf
    • https://cdn.shopify.com/s/files/1/0429/0894/2499/files/28227272278.pdf
    • https://cdn.shopify.com/s/files/1/0433/7352/7203/files/try_me_dej_loaf_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/2783/9641/files/21147475298.pdf
    • https://cdn.shopify.com/s/files/1/0434/0924/4316/files/jazijexinek.pdf
    • https://cdn.shopify.com/s/files/1/0432/6404/9318/files/minimal_adb_fastboot_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ec9.bin
a683238b81ff208b816cf78c33036475558fb6370875c3dedf5e9b514dffca4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC9 5420 bytes
font_01_sfnt_off00008101.bin
78e292acd137fa24a7cf33488b8cd4bcdc37b8ea2fa519db8b5a44126a4ead61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8101 9404 bytes
font_02_sfnt_off0000a11e.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA11E 4324 bytes

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