Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d8409195104d5cd…

MALICIOUS

PDF

47.3 KB Created: 2020-08-19 10:53:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42a2b2ac404823b8f83411b58bbf5f8c SHA-1: 2292cad60f7541d60b138f4796c09466e6729b32 SHA-256: 9d8409195104d5cddd33d80a910ff5f55176d88ee8c0a2a1d59cf9a8979415bc
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, characteristic of a link farm. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=french+imperative+form+of+partir'. The document body, though heavily obfuscated, also contains this URL and numerous other URLs pointing to Shopify domains, suggesting an attempt to distribute malicious content or traffic through a large number of seemingly benign links. No scripts were extracted, and the primary malicious activity appears to be the redirection via the embedded links.

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=french+imperative+form+of+partir
    • http://files.partnersinhopeusa.org/uploads/1/3/1/3/131384679/gajujogukibegoget.pdf
    • http://files.btmamusic.com/uploads/1/3/0/7/130775448/7091750.pdf
    • https://cdn.shopify.com/s/files/1/0428/8518/5702/files/71510097193.pdf
    • https://cdn.shopify.com/s/files/1/0436/8911/5801/files/76102349980.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/vojomawa.pdf
    • https://cdn.shopify.com/s/files/1/0432/7889/3214/files/35317719357.pdf
    • https://cdn.shopify.com/s/files/1/0432/4625/6295/files/understanding_aeronautical_charts.pdf
    • https://cdn.shopify.com/s/files/1/0431/8298/1281/files/74068138123.pdf
    • https://cdn.shopify.com/s/files/1/0428/0510/0711/files/96714748765.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2109/files/pokemon_x_chaining_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/6280/4136/files/encyclopedia_of_chart_patterns.pdf
    • https://cdn.shopify.com/s/files/1/0431/6420/5216/files/zupojivisatibamuwalole.pdf
    • https://cdn.shopify.com/s/files/1/0438/3368/8226/files/75049990522.pdf
    • https://cdn.shopify.com/s/files/1/0432/5716/8027/files/54648235723.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_off00005e22.bin
69c92099dfb7fa02cb8ba43cee47420acebab1e563ecb3fd643a3cb71ea4dcae
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E22 5060 bytes
font_01_sfnt_off00006f2f.bin
aab9f0c7adea8d8a0201aaf2b18e97bb524de621b85050d7347439b4fa55306b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2F 13356 bytes
font_02_sfnt_off00009949.bin
f6e0f4a25f18a144688c6b7f40519a5efc98c72643b9054f89526e396d9b459d
pdf-font-stream PDF embedded font (sfnt) at offset 0x9949 16144 bytes