Malicious PDF — malware analysis report

Static analysis result for SHA-256 58f621e4840c3eff…

MALICIOUS

PDF

42.9 KB Created: 2020-08-02 16:48:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c19217981b66eec8f78d1641d53dd93 SHA-1: bb2fdd7bcf8eb04e4afeb3af81a9a307cf4696e9 SHA-256: 58f621e4840c3efff666b17c4425bc8cf068cdc16b6ab5296f1d7ea1cbe73ed3
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, characteristic of a link farm. One of these links, found in the document body and identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK, points to 'https://ttraff.com/pify?keyword=espn+nfl+2k5', which is flagged as a malicious redirector. The presence of numerous links, including the malicious one, suggests an attempt to lure users to malicious content or to manipulate search engine rankings.

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=espn+nfl+2k5
    • http://files.shirleywatsonfinancial.com/uploads/1/3/0/7/130776033/vifapawofagadokikofu.pdf
    • http://files.julianakimfinearts.com/uploads/1/3/0/7/130775242/nigaxiko.pdf
    • http://files.grace413.com/uploads/1/3/0/7/130775373/98438.pdf
    • http://files.bennettcoffeeroasting.com/uploads/1/3/1/3/131398504/3576745.pdf
    • http://files.morgancountyillinoishistory.com/uploads/1/3/0/8/130814529/laburopagodeg_kaxova.pdf
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/85548381282.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/39705327077.pdf
    • https://cdn.shopify.com/s/files/1/0437/1434/7160/files/kufebozofebidov.pdf
    • https://cdn.shopify.com/s/files/1/0436/1604/3171/files/86556224184.pdf
    • https://cdn.shopify.com/s/files/1/0428/0736/1703/files/9899907028.pdf
    • https://cdn.shopify.com/s/files/1/0430/7379/8298/files/sazoxilazizix.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/woneletetikak.pdf
    • https://cdn.shopify.com/s/files/1/0431/9431/9009/files/pejanesorusegujo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7929/5383/files/973865044.pdf
    • https://cdn.shopify.com/s/files/1/0428/5153/2963/files/ninolufowiseg.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_off00006ba5.bin
04ce3b0fbae283c467016db5a2be6e295306e7a0393952bfadc43ddc895a8874		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA5 4864 bytes
font_01_sfnt_off00007c5b.bin
7275ad1005a2a5179cf8215899325f93a4e3e0767cd597b2ca8dc17d4662c2c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5B 10180 bytes

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