Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba6258642f99c2c4…

MALICIOUS

PDF

45.1 KB Created: 2020-08-04 00:06:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 38bc972263d0a80923d8e3f7c1afea00 SHA-1: 738b7aa07bf47d29c66b589baaee640d06bcae82 SHA-256: ba6258642f99c2c43dd45c390b5e5d81e6ff14448c783a307eb0abdfacfa9ecc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.003 Windows Command Shell T1204.002 Malicious Link

The PDF contains a lure instructing the user to interact with the clipboard and a command-line interface, indicating an attempt to trick the user into executing commands. It also hosts a large number of links to external PDFs, with one identified as a redirector to malicious infrastructure. No scripts were extracted, but the combination of the clipboard lure and the malicious redirector strongly suggests a social engineering attack aimed at delivering a payload.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/pify?keyword=asamblea+nacional+constituyente+guatemala+pdf
    • http://files.onlinemobiletrainer.com/uploads/1/3/0/7/130776266/4990596.pdf
    • http://files.stancobbcowboypainter.com/uploads/1/3/1/4/131453648/26f34193af1.pdf
    • http://kajodezos.weismann.net/uploads/1/3/1/8/131856543/lowesefuxekasoju.pdf
    • http://files.talonsouthonorflight.org/uploads/1/3/0/9/130969825/wisimugupunugabuzug.pdf
    • http://files.aleehannah.com/uploads/1/3/1/8/131871992/6569848.pdf
    • https://cdn.shopify.com/s/files/1/0447/9467/5357/files/thinking_recursively_with_java_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6219/8425/files/nekiwomivi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8271/8115/files/52400056098.pdf
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/76430865213.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kosetomamevisired.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6083/files/xanajalelizivenulojoleka.pdf
    • https://cdn.shopify.com/s/files/1/0433/9708/7390/files/75447904648.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/92476493500.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7985/files/12118365141.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/48242987247.pdf
    • https://cdn.shopify.com/s/files/1/0433/6189/4565/files/kadufeniwuxarudedube.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/62852128138.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_off00006d09.bin
f4a0e0544e8d2348dbf1b2ae4f714a9ccf75e1286012401a71faa48d96e5de29
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D09 5608 bytes
font_01_sfnt_off00008017.bin
b171366317db6a6131093f9d0882c5240191bc727a1b74218a77640734089872
pdf-font-stream PDF embedded font (sfnt) at offset 0x8017 11904 bytes