Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bc8cdc8fe777b07…

MALICIOUS

PDF

37.3 KB Created: 2020-08-22 09:08:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: febd7829dd261b22e356a8f1e08efe23 SHA-1: a315fa0eaa0e3a821ddecba350f9407a9b8e44ac SHA-256: 8bc8cdc8fe777b07ac0fb64407a34f970a555bdb8ada9ea0bbb210f5363ea27b
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=francis+bacon+essays+pdf+free'. This indicates a phishing or scam attempt, likely to redirect users to a malicious site. The document also contains a PDF link farm heuristic, suggesting it's part of a larger SEO poisoning or link farm operation. No scripts were extracted, but the embedded URLs and heuristics strongly suggest a malicious redirection attempt.

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/pify?keyword=francis+bacon+essays+pdf+free
    • http://files.thecreakyfish.com/uploads/1/3/0/7/130776263/jobelirun.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/3453683127.pdf
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/kinemaster_chroma_key_apk_link.pdf
    • https://cdn.shopify.com/s/files/1/0431/7364/2406/files/38794135786.pdf
    • https://cdn.shopify.com/s/files/1/0439/4123/2795/files/50665515176.pdf
    • https://cdn.shopify.com/s/files/1/0439/1033/2571/files/jenew.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/32474789027.pdf
    • https://cdn.shopify.com/s/files/1/0437/6251/6122/files/zagumibemu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3750/8252/files/go_keyboard_2016.pdf
    • https://cdn.shopify.com/s/files/1/0429/9096/0799/files/small_smiley_face.pdf
    • https://cdn.shopify.com/s/files/1/0430/1147/3571/files/zawufesuximerinat.pdf
    • https://cdn.shopify.com/s/files/1/0428/7001/4111/files/40079942690.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000545c.bin
b9f70d60aa5f5f9096d44e97b30a4d18a6e7b5a9ee76670e4d382a7e5cf23b4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x545C 5312 bytes
font_01_sfnt_off0000666f.bin
4988a9d829253b216bd380704b6b96649f8820a63f4e1dcfa8467e4c635051d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x666F 10012 bytes

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