Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9e549ea17b6221e…

MALICIOUS

PDF

45.5 KB Created: 2020-09-05 07:20:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c566f7462a508752a568e17daa5a5d8 SHA-1: 901905daa6d3465b1954a707dfe9879b29afb84d SHA-256: a9e549ea17b6221ec7a02eb3b42462fd6c618323d419344f6a007c92d96fbd0c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.me'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The file also exhibits characteristics of a PDF link farm, embedding numerous external links, likely to obscure the malicious destination. 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.me/wix?keyword=chicken+burrito+bowl+nutrition+information
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/13883062786.pdf
    • https://cdn.shopify.com/s/files/1/0433/8548/7525/files/kixukogasasifepogevanefe.pdf
    • https://cdn.shopify.com/s/files/1/0434/5410/3713/files/71618970598.pdf
    • https://static.usrfiles.com/ugd/19103d_473681f6bac14e6b9661c43466a330eb.pdf
    • https://static.usrfiles.com/ugd/3b0c81_f8b6e8aa599e42f39c82a58772b19b40.pdf
    • https://static.usrfiles.com/ugd/7041e4_98fe4722508f4e9fb9fa74e9e65d1f42.pdf
    • https://static.usrfiles.com/ugd/c81504_7c81c955f60347158a5e83438bdb0919.pdf
    • https://static.usrfiles.com/ugd/b77b08_efdda90a432846e3b970bd841dd697ee.pdf
    • https://cdn.shopify.com/s/files/1/0434/2779/1009/files/42461361974.pdf
    • https://cdn.shopify.com/s/files/1/0434/2897/0647/files/annihilation_jeff.pdf
    • https://cdn.shopify.com/s/files/1/0435/2652/0986/files/anemia_defisiensi_b12.pdf
    • https://cdn.shopify.com/s/files/1/0437/6562/9077/files/adobe_signature_font.pdf
    • https://cdn.shopify.com/s/files/1/0431/6348/4315/files/rojerokesumovefatinelat.pdf
    • https://static.usrfiles.com/ugd/c3f59f_027e25390d334e9495adf35bead9d3f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_a55c3657c1c346ceb08a8fe36e0100b7.pdf
    • https://static.usrfiles.com/ugd/5f226e_ae3225d78e5e4f958f5fc50a3822d239.pdf
    • https://static.usrfiles.com/ugd/221f3a_e694228134684a8d822156e740fb4fca.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_off000064e2.bin
fee6a27646dcc414aaf1016b85223b1d29269ca3772cf90cf121e1daaa5edb3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x64E2 5144 bytes
font_01_sfnt_off00007642.bin
a3766f20cacee633cc18884be7d5a96feabd872b99dd6e0b890f7a1342792a0a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7642 10720 bytes
font_02_sfnt_off00009aa2.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x9AA2 4324 bytes