Malicious PDF — malware analysis report

Static analysis result for SHA-256 55ca1e472c9fa948…

MALICIOUS

PDF

46.4 KB Created: 2020-09-01 01:53:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7831fe2e28183191a7c54e8b624f630a SHA-1: 95d1c8ee1671e2ae2a06545a2ee13c2442f8e5b9 SHA-256: 55ca1e472c9fa948aaf42b24649af19e198b64c802406a6531d27b3eb77039db
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/wix?keyword=hp+p1102w+spec+sheet'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on shopify.com. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking product name, suggesting a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

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/wix?keyword=hp+p1102w+spec+sheet
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/josigewaxeratulowi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8501/1871/files/94752137741.pdf
    • https://cdn.shopify.com/s/files/1/0438/5538/0630/files/zugilufatugutev.pdf
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/28285029738.pdf
    • https://cdn.shopify.com/s/files/1/0462/2958/6069/files/57030902168.pdf
    • https://static.usrfiles.com/ugd/c63dba_1045e1b8c962415bb1c71d194329dc38.pdf
    • https://static.usrfiles.com/ugd/e5cbe5_4adf0f659ac24388b7c1e9c1e3cda017.pdf
    • https://cdn.shopify.com/s/files/1/0464/8547/1400/files/luvikexujasewumirudinotix.pdf
    • https://cdn.shopify.com/s/files/1/0447/1944/0028/files/cirrose_heptica_tratamento.pdf
    • https://cdn.shopify.com/s/files/1/0431/0728/7206/files/31851495793.pdf
    • https://cdn.shopify.com/s/files/1/0432/8279/2612/files/donne_bukowski_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/4553/6419/files/39408021906.pdf
    • https://cdn.shopify.com/s/files/1/0436/9108/1882/files/banner_maker_pro_free_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0438/2998/5430/files/essential_of_firefighting_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0440/0444/2262/files/paposizabodulapelewen.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_off0000690e.bin
c0e112257476be776014e984653fd4c5f3c7bb2b0fe407e6bb11b1a50627fc88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x690E 5064 bytes
font_01_sfnt_off00007a6e.bin
4f65a3bedd9f0aefd14f18404adac05e611503cf5ae69cb0c1f8780a8f7862fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6E 16032 bytes

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