Malicious PDF — malware analysis report

Static analysis result for SHA-256 932801b1a1c174e3…

MALICIOUS

PDF

40.1 KB Created: 2020-08-19 08:06:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 055db303bf116d4f25bcf95392658d2d SHA-1: b8c942274d3e295532c46265dc2b510204129660 SHA-256: 932801b1a1c174e309f04c968bef2961a6473a0fa8d1ae95153847cb8d28a4ab
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a link that redirects to a known malicious URL, disguised as a download for a Gameboy emulator. The document also exhibits characteristics of a link farm, with numerous embedded links pointing to various PDF files, likely for SEO manipulation or to obscure the malicious redirect. The presence of a visual download button further supports the lure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=gameboy+advance+emulator+mac+free
    • http://bobar.ikaahukarchaeologyproject.com/uploads/1/3/0/8/130874431/gibovore_zuvowo.pdf
    • https://cdn.shopify.com/s/files/1/0449/9865/6158/files/rib_fracture_deformity.pdf
    • https://cdn.shopify.com/s/files/1/0431/7990/1096/files/62971616875.pdf
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/7627148318.pdf
    • https://cdn.shopify.com/s/files/1/0434/4276/5976/files/voriroxisamewinafiwifavun.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/8635468650.pdf
    • https://cdn.shopify.com/s/files/1/0432/2725/0848/files/govagozifu.pdf
    • https://cdn.shopify.com/s/files/1/0427/5548/9948/files/best_christmas_carols_songs.pdf
    • https://cdn.shopify.com/s/files/1/0440/4497/6278/files/mekoviwijevurekopar.pdf
    • https://cdn.shopify.com/s/files/1/0436/1424/0931/files/2197276392.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_off00004f2f.bin
2d4c31cdd35cdf82b1e0cf0f01928264104e54c50da2adceda4a917eb0371bf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F2F 5156 bytes
font_01_sfnt_off000060b2.bin
ec04bd6de02f04110fb6a6bc491c1536d25105f5a50d50a429f6b21cb4eb2c0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B2 11416 bytes
font_02_sfnt_off000085df.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85DF 4324 bytes

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