Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b7add1a93efa479…

MALICIOUS

PDF

118.8 KB Created: 2020-08-01 15:03:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a92ab75cf634895da86a53d8ddb9129 SHA-1: e000a633ca32556f910d0e463190dea7294085ee SHA-256: 9b7add1a93efa4796ebcbe14ccc43916840c3e5a553b8efd4036a1414533279a
220 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including a critical finding for a link to a known malicious redirector (https://ttraff.cc/pify?keyword=my+cnf+example). It also features a link farm hosted on Shopify, likely for SEO poisoning or to obscure the true destination. The document's content and heuristics suggest a lure for password recovery secrets or to trick the user into downloading an archive, both common social engineering tactics to obtain sensitive information or deliver further malware.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=my+cnf+example
    • http://files.abrokenheartsgps.org/uploads/1/3/2/7/132712315/6c3525.pdf
    • http://files.monaghantownbiodiversity.com/uploads/1/3/2/3/132303286/d2a348594a1800.pdf
    • http://files.revivalfellowshipkids.com/uploads/1/3/0/7/130776483/173af05a.pdf
    • http://files.mdsolutions1.com/uploads/1/3/1/4/131437685/81eece.pdf
    • http://files.sharkbodiesfitness.com/uploads/1/3/1/8/131859042/zufawe.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6142/files/83453946193.pdf
    • https://cdn.shopify.com/s/files/1/0435/1698/5503/files/46040424530.pdf
    • https://cdn.shopify.com/s/files/1/0430/9444/2137/files/gigokivatuzaketan.pdf
    • https://cdn.shopify.com/s/files/1/0438/3087/0173/files/57650463878.pdf
    • https://cdn.shopify.com/s/files/1/0438/3873/4496/files/xalejelu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89647405972.pdf
    • https://cdn.shopify.com/s/files/1/0434/2739/7797/files/tegifotuwefakivaluzitave.pdf
    • https://cdn.shopify.com/s/files/1/0427/9438/5575/files/47142600342.pdf
    • https://cdn.shopify.com/s/files/1/0436/0224/7838/files/jafib.pdf
    • https://cdn.shopify.com/s/files/1/0430/5243/3557/files/57799013724.pdf
    • https://cdn.shopify.com/s/files/1/0438/3296/7318/files/76486005640.pdf
    • https://cdn.shopify.com/s/files/1/0436/5497/1557/files/23421444581.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_off000186ab.bin
d9bc6d3dc87236b6b30c91249e2053c8a7b19fcc9995700037e3ae98f4f517f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x186AB 5064 bytes
font_01_sfnt_off000197f8.bin
682a14b3d9bc9c17bc8d26a54c48e1490631549e56e3d981b63efe1767dd51fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x197F8 17532 bytes