Malicious PDF — malware analysis report

Static analysis result for SHA-256 543bce5295c22a85…

MALICIOUS

PDF

43.8 KB Created: 2020-08-26 13:55:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f13d6b86bda7f8a586d06cc144f6d264 SHA-1: ecb21bae3021a3bfc628eec9a096d50b8ef07f9b SHA-256: 543bce5295c22a852925eb245b67df4e0c01bac99bcf64cf6039c7afc1da0ffe
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1566 Phishing

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=atheros+ar5007eg+wireless+network+adapter+download'. This URL is likely part of a phishing or malware distribution chain. The document also contains a large number of external PDF links, many hosted on Shopify, which is flagged as a PDF link farm. The presence of a 'download button' heuristic further supports the lure to download a malicious file.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=atheros+ar5007eg+wireless+network+adapter+download
    • http://files.realwomenrealjewelry.com/uploads/1/3/2/6/132681494/4834819.pdf
    • http://files.walshbotanicals.net/uploads/1/3/1/4/131453121/jigiwuzagebo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7112/7208/files/kitaro_caravansary_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/0795/7400/files/barbarians_at_the_gate_book.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/39764440216.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/absalon_class.pdf
    • https://cdn.shopify.com/s/files/1/0438/1625/5650/files/lakivibumoparawul.pdf
    • https://cdn.shopify.com/s/files/1/0437/2519/3368/files/3417922183.pdf
    • https://cdn.shopify.com/s/files/1/0431/5719/2853/files/niwatutadipemoluve.pdf
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/bed_bath_and_table_king_size_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tokavurovapipemekimisam.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_off00006bad.bin
e17c3f1083aaace57d861ef2ecb985252adb813e3957252e90b3ad19cc040b8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAD 5712 bytes
font_01_sfnt_off00007f32.bin
ceec88f651dbf9c8c52042f6dbcd1a74f9f0620b75ccd73a91f71cb09a170358		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F32 10224 bytes

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