Malicious PDF — malware analysis report

Static analysis result for SHA-256 a09dfcd2eda96096…

MALICIOUS

PDF

47.0 KB Created: 2020-08-11 20:15:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c66511eb16f0b81689ba4331f38d226 SHA-1: 39462dfec465451432951d810ff7c263184b6392 SHA-256: a09dfcd2eda96096e04572a2f0f5838300b9269fd975a76f0ec0b8b807afe57e
160 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as a Java 8 streams tutorial. Additionally, the document instructs the user to copy and paste content into a command-line context, likely to execute further malicious commands. The presence of numerous links to PDFs hosted on various domains suggests a link farm or SEO poisoning tactic to distribute malicious content.

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=java+8+streams+tutorial+pdf
    • http://files.nphsjrwolfpack.com/uploads/1/3/1/4/131483253/pageponiputi_gosalobire_vopepas_fatibo.pdf
    • http://files.starsidepta232.org/uploads/1/3/1/6/131636562/mubif-noraluvugavija-bafowulogal.pdf
    • http://files.timmahekdds.com/uploads/1/3/1/4/131406303/birep_jabekadoroju_lisafa.pdf
    • http://files.beautextensions.com/uploads/1/3/1/6/131637714/gijeregimivi.pdf
    • http://files.ronandthaophotography.com/uploads/1/3/1/6/131637108/bidek-gukabiguga.pdf
    • https://cdn.shopify.com/s/files/1/0434/4479/7606/files/22830046063.pdf
    • https://cdn.shopify.com/s/files/1/0436/4982/6969/files/56194271130.pdf
    • https://cdn.shopify.com/s/files/1/0439/6492/4062/files/usine_acide_sulfurique.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/borutazaweluv.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/arabic_to_english_dictionary_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/6630/2376/files/11811564499.pdf
    • https://cdn.shopify.com/s/files/1/0431/8606/1480/files/gobikozufafejilerajakidir.pdf
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/escape_from_tarkov_key_bindings.pdf
    • https://cdn.shopify.com/s/files/1/0429/9646/5823/files/bowevogisifewifaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/7026/7291/files/maziwe.pdf
    • https://cdn.shopify.com/s/files/1/0437/3456/5025/files/60800248236.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_off00006aff.bin
603d5c9446c278c70b4c5510b948898a6942eb4dde7fd46816f2adc63dcf8b3d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFF 5432 bytes
font_01_sfnt_off00007d63.bin
cc3e6cbf02924fe54cf48c4af88daef8b15453ee5fa12cdecb15ae08639cbddb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D63 15168 bytes