Malicious PDF — malware analysis report

Static analysis result for SHA-256 20cb1faf5b8bb7d1…

MALICIOUS

PDF

34.0 KB Created: 2020-08-11 20:15:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73398dcbb2070d7a5d280e234cddecad SHA-1: 47ce5aede7a7889da3eb820c345a23724cc5d972 SHA-256: 20cb1faf5b8bb7d1cb0f00abe48009967ccebfe2216c63889fda1048fda70de3
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=cashflow+101+board+game+pdf'. This indicates the document's primary purpose is to redirect the user to a malicious site, likely for further exploitation or phishing. The document body, though heavily corrupted, contains references to the lure 'Cashflow 101 board game pdf' and the redirector URL.

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.com/pify?keyword=cashflow+101+board+game+pdf
    • http://files.cencalcaribbean.org/uploads/1/3/2/6/132681771/jemedogeno.pdf
    • http://files.bluestreamaquaculture.com/uploads/1/3/2/6/132681482/d3088d87d5e4.pdf
    • http://files.abundantgracesparta.org/uploads/1/3/0/7/130739742/purer.pdf
    • http://files.mystudio13.com/uploads/1/3/1/3/131379371/fd61c1a016d1.pdf
    • http://files.texasbestbrushes.com/uploads/1/3/0/9/130969151/3edb00479d9e9d.pdf
    • https://cdn.shopify.com/s/files/1/0432/4727/2098/files/16298849623.pdf
    • https://cdn.shopify.com/s/files/1/0432/5448/1058/files/append_int_to_string_c.pdf
    • https://cdn.shopify.com/s/files/1/0439/7305/0526/files/ace_academy_books_for_eee.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/club_car_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/8209/5517/files/75082838743.pdf
    • https://cdn.shopify.com/s/files/1/0430/9732/5732/files/pakoxapuzamugevuxuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9059/2422/files/2000_ford_taurus_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3359516262.pdf
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/82439625393.pdf
    • https://cdn.shopify.com/s/files/1/0433/5435/7910/files/15343935483.pdf
    • https://cdn.shopify.com/s/files/1/0435/3451/6376/files/oxford_streamline_english.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_off0000477e.bin
4da4212b21579b7bc4abf5f2e9a2424711707220be1dc1417db34371bbdc3935		 pdf-font-stream PDF embedded font (sfnt) at offset 0x477E 5784 bytes
font_01_sfnt_off00005b18.bin
fde83070819f3aa1f636b395b9056ce3da0120c68e0e095d5ea3452f68b67e39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B18 9376 bytes

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