Malicious PDF — malware analysis report

Static analysis result for SHA-256 c22810f8df45b9ed…

MALICIOUS

PDF

73.6 KB Created: 2020-08-04 22:59:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8f111bb364243ddb353f7ac3ba9cb01 SHA-1: 340340cbbb704daa5b436965606b4472f358d862 SHA-256: c22810f8df45b9edf1f77f1993dae3fd03e5a67aed05bb8bd44cecd38b097d20
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=aspiration+pneumonitis+and+aspiration+pneumonia+pdf'. Another critical heuristic identified a PDF link farm, with many links pointing to shopify.com. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. No scripts were extracted, limiting the analysis of further payload delivery.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.com/pify?keyword=aspiration+pneumonitis+and+aspiration+pneumonia+pdf
    • http://files.lovegrowscsa.com/uploads/1/3/0/7/130739037/momuri.pdf
    • http://files.fyrelandcanecorsos.com/uploads/1/3/0/7/130738641/wuminoz_vazeferis_wegawata.pdf
    • http://vawuziv.bangpleelanguageschool.com/uploads/1/3/2/6/132681504/tumejafajinu_veleretumesizo_luxukexam_dulal.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/93485228232.pdf
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/rumatorujanadesuridapexu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3178/9721/files/alkaloids_medicinal_uses.pdf
    • https://cdn.shopify.com/s/files/1/0435/0181/3915/files/87662412242.pdf
    • https://cdn.shopify.com/s/files/1/0431/0676/2903/files/pmf_vs_vs_cdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/9522/8565/files/86459853475.pdf
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/19487204151.pdf
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/54159848020.pdf
    • https://cdn.shopify.com/s/files/1/0432/7384/6952/files/soxurutoxagejosoroxufix.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/12528950946.pdf
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/15289793679.pdf
    • https://cdn.shopify.com/s/files/1/0438/2906/7933/files/gabebezuwosugubojib.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_off0000cfe1.bin
b216528fe323ba1ce7a09276800c08540f74d0168d99437311e7bcb4c6f8e3ac
pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE1 5028 bytes
font_01_sfnt_off0000e0d6.bin
650ec03f7d6cf1f0e886bd5803327b1b1ff071b10ebf6af4a551ca5ebb7170e8
pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D6 13088 bytes
font_02_sfnt_off00010aae.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x10AAE 4324 bytes