Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ffe5fdf03d41eee…

MALICIOUS

PDF

48.5 KB Created: 2020-08-03 08:45:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3963b07601fbc8ea1fde6d1e5ae2abf5 SHA-1: 360a56959b1677ede07712b79095d20482d5a274 SHA-256: 1ffe5fdf03d41eee3ea3aceb3ac219c72fe3f27e7029dd724aae467362cdb2a8
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link and a link farm, indicating a phishing or scam attempt. The document body explicitly requests sensitive information like 'ssh authorized_keys permissions', aligning with the 'SE_SECRET_RECOVERY_LURE' heuristic. The primary malicious URL identified is https://ttraff.cc/pify?keyword=ssh+authorized_keys+permissions, which likely leads to further malicious content or a phishing page.

Heuristics 4

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=ssh+authorized_keys+permissions
    • http://files.mutationpennants.com/uploads/1/3/1/4/131453384/subomuzoxob_lomasiteta_tikov.pdf
    • http://files.suncoastemall.org/uploads/1/3/0/7/130739783/sivag.pdf
    • http://files.sacredheartcluster.org/uploads/1/3/1/1/131163957/ratutoxikodit_loxowizis.pdf
    • http://files.rcdavis-tellinstories.com/uploads/1/3/1/3/131383624/ebc2656e5828c5.pdf
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/ditog.pdf
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/36990109437.pdf
    • https://cdn.shopify.com/s/files/1/0437/5658/5114/files/bezadafebivinonipa.pdf
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/9216826055.pdf
    • https://cdn.shopify.com/s/files/1/0439/1626/3592/files/56138943140.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/4708060761.pdf
    • https://cdn.shopify.com/s/files/1/0431/6292/7263/files/jejonogukixopeli.pdf
    • https://cdn.shopify.com/s/files/1/0429/4003/9324/files/fallout_4_45-_70.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/tapevigexo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/81132028569.pdf
    • https://cdn.shopify.com/s/files/1/0428/6955/5359/files/wakujetujozozevo.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_off00006846.bin
7b3b989a9a744da11739dea7496811198eb35bd718ec7f5450160fa7e128fb72
pdf-font-stream PDF embedded font (sfnt) at offset 0x6846 5400 bytes
font_01_sfnt_off00007a92.bin
43d70ba73196dbc14a6fd21eca8a2d6e2c3362d4f73fef7548a5817fbbc3f174
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A92 13844 bytes
font_02_sfnt_off0000a6b3.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6B3 4324 bytes