Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa1c2b2036915c24…

MALICIOUS

PDF

46.0 KB Created: 2020-08-30 19:39:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70d7652a8fb250783c44f97d7ba03985 SHA-1: 5712f0545dbe792df74bd8f1b880de088e26fddc SHA-256: fa1c2b2036915c242e8c03aa91761f2e42dc5662da32df54748752d5c6f084da
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, many of which point to a redirector service. The primary heuristic indicates that the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the one identified by the heuristic. This suggests the document is designed to redirect users to malicious content.

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.cc/wix?keyword=confessions+of+a+sociopath+psychology+today
    • https://static.usrfiles.com/ugd/b8c837_21185b2c102c45cb8d6790f78e68726b.pdf
    • https://static.usrfiles.com/ugd/b8c837_60aefdf27c8640259bb89050a311a25f.pdf
    • https://static.usrfiles.com/ugd/b8c837_d22341427f8f4d27855f576d3dc0180f.pdf
    • https://static.usrfiles.com/ugd/b8c837_25f721a07d224e1392216c32a96e24b1.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3097/files/685063887.pdf
    • https://cdn.shopify.com/s/files/1/0439/2484/8795/files/fojofuzagunuviluxinalav.pdf
    • https://cdn.shopify.com/s/files/1/0429/5698/0377/files/lubikevogotuzeg.pdf
    • https://cdn.shopify.com/s/files/1/0438/4073/3341/files/wolurepafumaxuxitogagir.pdf
    • https://cdn.shopify.com/s/files/1/0447/7698/0629/files/left_navigation_menu_bootstrap_4_template.pdf
    • https://static.usrfiles.com/ugd/b8c837_3a157940a3f544febec2083513d0072b.pdf
    • https://static.usrfiles.com/ugd/b8c837_ec1581671e9f4cbabdd2bf6ea3278440.pdf
    • https://static.usrfiles.com/ugd/9cc572_9eb605922c4340a7ba76f16c250d85f0.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9074/files/foxobawategobot.pdf
    • https://cdn.shopify.com/s/files/1/0437/6982/3390/files/butlins_skegness_map.pdf
    • https://cdn.shopify.com/s/files/1/0440/8279/0552/files/adventure_capitalist_hacked_apk.pdf
    • https://cdn.shopify.com/s/files/1/0435/7593/5135/files/nejesuxivumimaluwuva.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/fifisifibozufikesawo.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_off00007718.bin
db7b772ce5e121c5b5f9227a9d2029b621985c80ba409d27e8da259728530a00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7718 5328 bytes
font_01_sfnt_off0000893f.bin
1411ad4115f317f0c39a8ecd4689503661a23b278b03bcbc87115ead772be933		 pdf-font-stream PDF embedded font (sfnt) at offset 0x893F 9932 bytes

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