Malicious PDF — malware analysis report

Static analysis result for SHA-256 f794f4f5733702f8…

MALICIOUS

PDF

43.6 KB Created: 2020-08-19 13:10:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c18dd482cc0e4ef6bca51e1ec9df1725 SHA-1: 73ac18fd18ef52f3aac14574ef48cbd6efca3d52 SHA-256: f794f4f5733702f89c38304746dd254f71ae4f44df4ff71dd7f8a80ac58f18d0
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=new+bengali+full+movie++480p'. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to shopify.com domains. The document body, though partially corrupted, contains text related to a movie download lure and the malicious URL. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests this might be a precursor to delivering a password-protected archive.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=new+bengali+full+movie++480p
    • http://files.1220productions.com/uploads/1/3/1/0/131070792/f3292.pdf
    • http://files.shopteambros.com/uploads/1/3/0/7/130739891/4490419.pdf
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/creepypasta_stories.pdf
    • https://cdn.shopify.com/s/files/1/0437/7408/3233/files/aashto_m145.pdf
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/dowekejuwagojibapebuzikul.pdf
    • https://cdn.shopify.com/s/files/1/0429/1775/7095/files/bikhre_moti_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/jibumiwonowafunodugar.pdf
    • https://cdn.shopify.com/s/files/1/0433/7447/7464/files/70758739199.pdf
    • https://cdn.shopify.com/s/files/1/0434/0505/0021/files/92020264015.pdf
    • https://cdn.shopify.com/s/files/1/0428/5494/0828/files/17564503424.pdf
    • https://cdn.shopify.com/s/files/1/0429/3787/6639/files/the_billboard_book_of_top_40_hits.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_off00006bc5.bin
e043a61f0ace7e2bf9fbdfaf3d1c2e37d6f4c9ac4b51d5de468cd45277523955		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC5 5632 bytes
font_01_sfnt_off00007f10.bin
8b9a504c3b131eca3e334b189e42a7294129d6b42f3197dd37f456bb6e2d26e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F10 10296 bytes

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