Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeb5bb0936b74a13…

MALICIOUS

PDF

46.5 KB Created: 2020-08-03 03:43:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 927c7445a8cdb1411d01f31e1d2d2b24 SHA-1: f086329ab8bded4c398ee9ab2210a21fe958d92f SHA-256: aeb5bb0936b74a13e13ceca6a64ab3f2d1dbd36e00038997d2383f94933bf419
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 malicious URL identified is https://ttraff.cc/pify?keyword=git+remove+last+commit+from+remote, which is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, contains references to the malicious URL and other URLs hosted on Shopify and various other domains, suggesting a link farm or redirection scheme. No scripts were extracted, but the presence of numerous links and the malicious redirector strongly indicate a phishing or redirection attack.

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/pify?keyword=git+remove+last+commit+from+remote
    • http://ramire.brianwhettenart.com/uploads/1/3/1/6/131607029/d972630229edd.pdf
    • http://files.reganwhmacaulay.com/uploads/1/3/1/6/131606954/3723472.pdf
    • http://files.karamadental.com/uploads/1/3/1/0/131071041/tofijaxakanip_bogureg_vuzosexeket_fovidepopuw.pdf
    • http://files.irishdancect.com/uploads/1/3/1/3/131384127/2657585.pdf
    • https://cdn.shopify.com/s/files/1/0436/5467/6645/files/new_real_book_3.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/xodofatisowuxiju.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/64060510034.pdf
    • https://cdn.shopify.com/s/files/1/0429/2050/9596/files/mafufolere.pdf
    • https://cdn.shopify.com/s/files/1/0436/5916/5849/files/best_way_to_populate_a_discord_server.pdf
    • https://cdn.shopify.com/s/files/1/0432/0844/2020/files/gadutopomokuwelimitezo.pdf
    • https://cdn.shopify.com/s/files/1/0440/7663/0181/files/us_states_alphabetical_order.pdf
    • https://cdn.shopify.com/s/files/1/0431/7623/1063/files/vipixedilijunapifa.pdf
    • https://cdn.shopify.com/s/files/1/0428/6971/9196/files/77109415104.pdf
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/xalediwonupogebali.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/12201738232.pdf
    • https://cdn.shopify.com/s/files/1/0433/7264/2460/files/18570618373.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4266/files/18132968081.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/94440227733.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_off00006d86.bin
555e3cb3174e6dcfcac6a3f0f2bf816e303393f0bc6bee3aa177346f19d747c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D86 5120 bytes
font_01_sfnt_off00007ee1.bin
ed94b309b2ac2ea04c962c03d0efe921803669efd0fc12781babc9f32f4aa13b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE1 14428 bytes