Malicious PDF — malware analysis report

Static analysis result for SHA-256 8affa6f4696ca63b…

MALICIOUS

PDF

42.9 KB Created: 2020-08-20 03:27:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d414c2e61033cc4830287033329c687c SHA-1: dba1286d6ea1c6aa1dae8c9ceddc82a052e7a6dc SHA-256: 8affa6f4696ca63bcd21cb9640d2c592c8e50d7898639e7608c456c75008fb8a
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, intended to lure the user to a malicious site. The document also hosts a large number of external PDF links, many pointing to Shopify, likely for SEO manipulation to improve search engine ranking for malicious content. The primary malicious URL identified is ttraff.com, which is known to host redirectors.

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=android+sdk+path+linux
    • http://files.zfnstudios.com/uploads/1/3/0/7/130775704/devupobodudaxebum.pdf
    • http://biwifoji.christepiscopalschooldrama.org/uploads/1/3/1/3/131378950/c34a6d1b.pdf
    • http://files.zf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52876055892.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1297/files/bcs_math_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/63531010212.pdf
    • https://cdn.shopify.com/s/files/1/0432/8354/6267/files/zekibalilosaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/6408/2073/files/92707910507.pdf
    • https://cdn.shopify.com/s/files/1/0429/2381/9164/files/mezuniwe.pdf
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/56235504819.pdf
    • https://cdn.shopify.com/s/files/1/0428/9468/8419/files/wudoli.pdf
    • https://cdn.shopify.com/s/files/1/0461/7489/6281/files/96563943986.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/46229808658.pdf
    • https://cdn.shopify.com/s/files/1/0430/1714/2433/files/susera.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005aee.bin
802dd4d4d1b8e6b8770a018a66745f37af5d62354123a358926ae97eee2416ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AEE 4932 bytes
font_01_sfnt_off00006b9b.bin
b3d2a38069c015cba7c61d9e307bd01c20a74b4930e37d47db45bf6a88f97b2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9B 10924 bytes
font_02_sfnt_off000090ea.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90EA 4324 bytes

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