Malicious PDF — malware analysis report

Static analysis result for SHA-256 c03a1165f3d9286f…

MALICIOUS

PDF

43.3 KB Created: 2020-08-03 00:46:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 059acd16f6f1d799ae85a9a66fbc4267 SHA-1: 5bad45a249b99b32c708c93b2c7a2f70e3b09aec SHA-256: c03a1165f3d9286f8e5b766504ba40f06190314acb660db80c2f5381e525a99e
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm behavior, with numerous links pointing to external PDFs, many hosted on Shopify. The document body contains a call-to-action phrase, reinforcing the lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or exploitation.

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/pify?keyword=discord+delete+all+messages
    • http://files.comealiveart.com/uploads/1/3/1/6/131637055/pitewegotimu.pdf
    • http://files.montagmorgen-workshop.com/uploads/1/3/1/4/131409463/jumujedixoxutela.pdf
    • http://files.georgethequarter.com/uploads/1/3/0/9/130969926/2649409.pdf
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/migujemejov.pdf
    • https://cdn.shopify.com/s/files/1/0431/7298/7046/files/bonorasudijenuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/4306/1913/files/52382675616.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/susadivubijovezupa.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/vumosipexe.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/wipikeb.pdf
    • https://cdn.shopify.com/s/files/1/0429/0609/1673/files/47756327055.pdf
    • https://cdn.shopify.com/s/files/1/0431/3831/8487/files/message_in_a_bottle_tab.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/dabadilujemi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/tapizuroduwalubakotofaxe.pdf
    • https://cdn.shopify.com/s/files/1/0430/3575/4650/files/30378915861.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/organic_chemistry_david_klein_1st_edition.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_off00006a1f.bin
3122eb8e729632690c59ce8014bc4a85f9eb8213b325609ab41d231846244b65
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A1F 5260 bytes
font_01_sfnt_off00007bea.bin
4b403624507c87d8911ef9dcb791176d2033a7021415ad0862b13cf325dbb9ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BEA 10660 bytes