Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf4690a3ee61a7ac…

MALICIOUS

PDF

42.4 KB Created: 2020-08-16 15:00:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70b79be936f558ac49d01dd80b90c863 SHA-1: 7c307a0723eb94ea0f2dd1d8bd1df4bd66b57649 SHA-256: cf4690a3ee61a7ac5212e678b183bbcf86b728a4b6011279cf50e01600866d7b
128 Risk Score

Malware Insights

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

The PDF contains a lure related to credit card authorization forms, which is a common phishing tactic. It embeds a large number of external links, with one specifically identified as a malicious redirector. This redirector likely leads to a malicious payload or phishing page. The PDF structure and embedded links suggest a delivery mechanism for further compromise.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=credit+card+authorization+form+pdf+fillable
    • http://files.centerforburmastudies.com/uploads/1/3/1/3/131383483/6747307.pdf
    • http://files.electricscooterrentalorlando.com/uploads/1/3/2/7/132712072/pozujidulotesew.pdf
    • https://cdn.shopify.com/s/files/1/0429/4616/6943/files/oxford_bookworms_audio.pdf
    • https://cdn.shopify.com/s/files/1/0428/6034/7551/files/logujewanaxol.pdf
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/learn_python_in_one_day_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/4885/2894/files/60444534641.pdf
    • https://cdn.shopify.com/s/files/1/0431/8671/6830/files/beechcraft_baron_58p_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2953/6676/files/lobigagafupulene.pdf
    • https://cdn.shopify.com/s/files/1/0434/5213/7622/files/33334741584.pdf
    • https://cdn.shopify.com/s/files/1/0436/5955/9065/files/ups_api_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0435/0912/1184/files/25717737171.pdf
    • https://cdn.shopify.com/s/files/1/0433/9151/6826/files/xavin.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_off00005a22.bin
1f9b346c374a629b6d9099e0f0a526a7c31d4be3e81e83bd7aafaf5db5d1b181		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A22 5312 bytes
font_01_sfnt_off00006c07.bin
9224fd2b1f14968e750d4ea3698b356c8d7de988c6b738974b1db199f757a38e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C07 10172 bytes
font_02_sfnt_off00008ec8.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC8 4324 bytes

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