Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a7a083d6a55d0c1…

MALICIOUS

PDF

44.3 KB Created: 2020-09-01 21:02:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6de0b9106dd655b67312781e0698d365 SHA-1: 2d1393134ebb3b006a7b4e1a8899a21010877e4c SHA-256: 1a7a083d6a55d0c1665ac981c659d6e0abe9492fd6e3873c36f08f987817664e
120 Risk Score

Malware Insights

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

The PDF file contains a link disguised as a lure for game cheats, which redirects to a known malicious infrastructure. The document body, though heavily obfuscated, contains the target URL and references to game cheats. The PDF was generated by wkhtmltopdf, a tool often used to create malicious PDFs.

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.com/wix?keyword=cheats+para+clash+royale+android
    • https://static.usrfiles.com/ugd/21e6f2_9a5af7dae2924ddcb7d7070eda3df41d.pdf
    • https://static.usrfiles.com/ugd/d2cc1f_b3257060350a45f48d0a49c5346e390e.pdf
    • https://static.usrfiles.com/ugd/1fbf8b_e3173e55e8704fba8e7e26b5054d78f5.pdf
    • https://static.usrfiles.com/ugd/4c76bf_d69b7bed148340aeb059d22b51fbd182.pdf
    • https://static.usrfiles.com/ugd/dc98cc_62cf8c2bd5c34ff3bca870fda1b73de9.pdf
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/angielski_czasy_teraniejsze_wiczenia.pdf
    • https://cdn.shopify.com/s/files/1/0428/4655/2227/files/59013979023.pdf
    • https://cdn.shopify.com/s/files/1/0431/2668/5858/files/91553628720.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2084/files/winameloretegejifuxiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/2254/1219/files/kazuwepob.pdf
    • https://cdn.shopify.com/s/files/1/0429/9037/0975/files/christina_grimmie_all_songs.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4831/files/destinies_of_the_soul_dr_ludovic.pdf
    • https://cdn.shopify.com/s/files/1/0432/4907/4340/files/1000_watts_amplifier_circuit_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0433/5747/0872/files/xubejudomigoburigaramu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6640/0663/files/94293134840.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_off00006230.bin
a8c639f3ce53e877e6e1ed7b1b1f2779f15d4e8de91eb0d51a01115ab1d9c58e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6230 5072 bytes
font_01_sfnt_off00007369.bin
3176e8e53cb383bd44c6702c05c75fb1efd689df838bf33965fdaf866c2b946c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7369 10268 bytes
font_02_sfnt_off0000960b.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x960B 4324 bytes

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