Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4a67a0578012844…

MALICIOUS

PDF

50.6 KB Created: 2020-09-07 23:30:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0314b450b7534594374532131109ca4f SHA-1: c980de5a57aadabad24d818378eb40ace2112af4 SHA-256: d4a67a0578012844ed9f0fc9b13ae8441707447e123ec69414cd28a568954767
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/wix?keyword=flower+flyer+template+free'. The document body, though heavily obfuscated, contains references to 'flower flyer template free', suggesting a lure to entice users to click the malicious link. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=flower+flyer+template+free
    • https://cdn.shopify.com/s/files/1/0432/3436/1508/files/gina_asma_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0436/6968/4377/files/libros_apocrifos_completo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5597/2501/files/21099397340.pdf
    • https://static.usrfiles.com/ugd/a474dd_1bf519f17b9a40e39e721554b4680c79.pdf
    • https://static.usrfiles.com/ugd/ee6100_1e56e7c6ce6440ac936ab8324c46347f.pdf
    • https://static.usrfiles.com/ugd/299074_b33a7801eddb434f9a75f43eb7b9241b.pdf
    • https://static.usrfiles.com/ugd/4d400c_41c5bf1279df4e4194d49b22bea08816.pdf
    • https://static.usrfiles.com/ugd/77d535_6775a28887d24497aca95ff0757e1f71.pdf
    • https://static.usrfiles.com/ugd/b8c837_004b04228d004325abd11dc9426fcc80.pdf
    • https://static.usrfiles.com/ugd/314c35_ecaeca5b9c6447fb907cd07aa05dff6a.pdf
    • https://static.usrfiles.com/ugd/fb5067_4540fcfb07e8492793a418e55568220f.pdf
    • https://static.usrfiles.com/ugd/65d6f7_fa2c0146e0534664bbda11760e9e756d.pdf
    • https://static.usrfiles.com/ugd/f1d680_eb02895f668a481fbc2b1a2627a8e634.pdf
    • https://static.usrfiles.com/ugd/eb4c03_c0f2fcdb305b4bf58a669409321be155.pdf
    • https://static.usrfiles.com/ugd/8e6e76_65abbab8e8a94c1db2058aeae1527705.pdf
    • https://static.usrfiles.com/ugd/b8c837_192bbc2f48da4d24851bfaf75603d4bf.pdf
    • https://static.usrfiles.com/ugd/65d6f7_39d11b95c59644228a7f459f3eeb22e0.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_off00007c0b.bin
65808dc1bd062dc63aea4222740a4b9e22780569720f2e8cb114180dfba3ab2a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0B 4652 bytes
font_01_sfnt_off00008bf2.bin
7ef22320aafc78641bf19fa96ebd70ae8742e81b49fb1617accfb1678e9f71a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF2 10400 bytes
font_02_sfnt_off0000af6d.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xAF6D 4324 bytes