Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2d908afd3f9811…

MALICIOUS

PDF

39.8 KB Created: 2020-08-22 13:29:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7334406bd6111a19241553f734bfbe78 SHA-1: 4b61a9f159a99bb9f98e7ed6be97196061475b55 SHA-256: 9e2d908afd3f981135f27605d455d6707c1d9adec1e373779a15eb17ccc428c1
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, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. One of the primary embedded URLs, 'https://ttraff.cc/pify?keyword=bumblebee+wallpaper+hd', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of numerous Shopify URLs, some confirmed benign and others unknown, suggests an attempt to blend malicious links with seemingly legitimate ones.

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=bumblebee+wallpaper+hd
    • http://zijilokog.emasullivan-bissett.com/uploads/1/3/2/6/132695839/ef1050cecbfed1.pdf
    • https://cdn.shopify.com/s/files/1/0462/3656/5653/files/41641284541.pdf
    • https://cdn.shopify.com/s/files/1/0437/2286/6842/files/medio_ambiente_laboral.pdf
    • https://cdn.shopify.com/s/files/1/0439/0476/2011/files/29279029806.pdf
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/56213170146.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6133/files/23073199866.pdf
    • https://cdn.shopify.com/s/files/1/0428/3269/1363/files/arushi_talwar_judgment.pdf
    • https://cdn.shopify.com/s/files/1/0429/1143/2867/files/87783170311.pdf
    • https://cdn.shopify.com/s/files/1/0432/9055/8620/files/godilimepakimewex.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/juwuwunosimepedo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58014629257.pdf
    • https://cdn.shopify.com/s/files/1/0439/7318/1598/files/chhath_puja_song_2019_free.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_off00005db8.bin
4cacf2ebc502a4575435259b2682bcd8009b52bc317daf7d2cf3fd69bb5c0fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB8 5300 bytes
font_01_sfnt_off00006fa3.bin
a7e0cb5922600bd767503de6a6f6e6296bab5f70c6f0fb7d5ef81ec79bb9fbf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA3 10308 bytes

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