Malicious PDF — malware analysis report

Static analysis result for SHA-256 a235b5723ba26e1d…

MALICIOUS

PDF

42.5 KB Created: 2020-09-01 01:06:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f87866dde7b91aa13604d8bf5b3804e SHA-1: 8b985db2c60e63894c56b8d0a638a489eb448bdc SHA-256: a235b5723ba26e1d6a6710cc2f6ded1bba759c824d240eb97cc1671780903c06
128 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a download for 'Blitzkrieg 2 free full'. This link, https://ttraff.com/wix?keyword=blitzkrieg+2+free+full, is identified as a malicious redirector. The document also features a large number of embedded links to other PDFs hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content. No scripts were extracted from this sample.

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/wix?keyword=blitzkrieg+2+free+full
    • https://cdn.shopify.com/s/files/1/0428/4514/3207/files/6890065426.pdf
    • https://cdn.shopify.com/s/files/1/0429/8365/3527/files/40241676900.pdf
    • https://cdn.shopify.com/s/files/1/0432/7931/9196/files/19827280885.pdf
    • https://cdn.shopify.com/s/files/1/0429/0369/9615/files/narikofajekire.pdf
    • https://cdn.shopify.com/s/files/1/0429/6713/8470/files/bellaire_primary_school_uniform.pdf
    • https://static.usrfiles.com/ugd/b8c837_bca7dae9723a426da834de2cc5479dfb.pdf
    • https://static.usrfiles.com/ugd/865d50_da31ce5db3344a4ab260364367ff0053.pdf
    • https://static.usrfiles.com/ugd/b4609a_43ae40bf82d04be489eff63923f4b2cb.pdf
    • https://static.usrfiles.com/ugd/b8c837_02d3e4587d254423a7fbd95ea432ab12.pdf
    • https://static.usrfiles.com/ugd/d54300_acea71186b5a4328949aac5ecb1497c1.pdf
    • https://static.usrfiles.com/ugd/8de238_65f9d81f7f3143b89b4fa755e7061d87.pdf
    • https://static.usrfiles.com/ugd/05301a_dd2a14ee2f1a4fd4b00a3a5507039d5b.pdf
    • https://static.usrfiles.com/ugd/7041e4_d2c9c48a13924c48ac56ab5a5979bd1a.pdf
    • https://cdn.shopify.com/s/files/1/0430/3280/5527/files/58324089204.pdf
    • https://cdn.shopify.com/s/files/1/0461/4271/8115/files/xixolelixav.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6953/files/98055299221.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5461/files/mepapupewufogipaxijuzigi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6738/3713/files/90704017764.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_off000069fb.bin
9f8a202f9be86fba2788c2c6da4ebc57796900bc21fb20f837fd27021c26f109
pdf-font-stream PDF embedded font (sfnt) at offset 0x69FB 4840 bytes
font_01_sfnt_off00007a99.bin
cd4d1c08d36e9d67f1b66eaa66ab4373ac67d97191da4ade1ea5e75daffd3f36
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A99 10076 bytes