Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0640d53b39aeea9…

MALICIOUS

PDF

54.5 KB Created: 2020-08-03 09:45:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 006b05827d3d10196635dbd60916682d SHA-1: 4dfb0a93ea9a319a935e9f2e1b783ca05dcf24d2 SHA-256: e0640d53b39aeea97f16565a8bbb49b4735912c903edf638c3fee83b359bbb28
180 Risk Score

Malware Insights

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

The PDF document contains a lure related to GitHub file pushing, which is highly suspicious given the embedded malicious redirector link. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm for SEO manipulation or distribution. The heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document may also attempt to phish for sensitive information like private keys or passwords.

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=how+to+push+a+file+to+github
    • http://files.bishopsstortfordjudo.com/uploads/1/3/2/7/132740482/911cc0d3a1.pdf
    • http://files.sanitasforexpats.es/uploads/1/3/1/4/131406344/dc35e57453bef9a.pdf
    • http://files.leightdickey.com/uploads/1/3/1/4/131409761/5851069.pdf
    • http://files.manitoulincottages.com/uploads/1/3/1/4/131438025/274a957.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86593634255.pdf
    • https://cdn.shopify.com/s/files/1/0440/3570/2949/files/folinenaloloxanupekin.pdf
    • https://cdn.shopify.com/s/files/1/0432/2240/1185/files/womepetoseletuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/8883/0873/files/4781487244.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/mokome.pdf
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/6485176063.pdf
    • https://cdn.shopify.com/s/files/1/0438/2267/8173/files/27250302000.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9659/files/98964303103.pdf
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/dominion_virginia_power_outage_map.pdf
    • https://cdn.shopify.com/s/files/1/0433/6461/4303/files/21713395870.pdf
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/61148756652.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066ae.bin
ba090ec4d529b020b724dc0d2a3c259225912a50045fc00604162c70919c54bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66AE 5260 bytes
font_01_sfnt_off000078a2.bin
2d1c02d7faeb7dad5af5d103f135926a0d4fd4e69f3a7da8959d46cf8e88466d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A2 3120 bytes
font_02_sfnt_off00008525.bin
9b1c6fa65b08b3ef211194d9ef6e49f4346329d997327a9c8fe6edebe96a9510		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8525 16204 bytes
font_03_sfnt_off0000b7c6.bin
8eda1f23b43e68bd053b6b1429c45debde68943dc86580dafe97bb33ffd1ae66		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7C6 16084 bytes

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