Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebb78f984cf0fa9d…

MALICIOUS

PDF

91.9 KB Created: 2020-08-13 23:16:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75f573352dacb2abaf6b6e93b8c1cd9a SHA-1: 4228d9b29a6fbc861ff1c8fecc085d8e18156305 SHA-256: ebb78f984cf0fa9d4006f7af082296b59af94bcbc4a84e1176774370cd1c7b1d
128 Risk Score

Malware Insights

MITRE ATT&CK
T1200 Hardware Add-in T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link and a link farm, indicating a phishing or scam attempt. The presence of a 'download button' lure further supports this. The primary malicious IOC is the redirector URL, which likely leads to a malicious payload or phishing page. No scripts were extracted, limiting the analysis of the exact payload delivery mechanism.

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.cc/pify?keyword=kathi+songs+mp4+hd
    • http://biribid.madeunderthemoon.com/uploads/1/3/0/9/130969573/sedixu.pdf
    • http://files.reefrovers.com/uploads/1/3/0/8/130874141/4645548.pdf
    • http://kopomijin.bartletthw.com/uploads/1/3/0/8/130874284/sugewujubupij.pdf
    • http://files.sreesreementumaharaj.org/uploads/1/3/1/4/131406258/599005.pdf
    • https://cdn.shopify.com/s/files/1/0439/4339/5483/files/fezulorumufofodurugigas.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/deligujatudefip.pdf
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/8802904551.pdf
    • https://cdn.shopify.com/s/files/1/0432/9907/8299/files/getuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/8790/4422/files/25468080560.pdf
    • https://cdn.shopify.com/s/files/1/0428/8161/3987/files/79642683622.pdf
    • https://cdn.shopify.com/s/files/1/0434/3319/7718/files/21661685443.pdf
    • https://cdn.shopify.com/s/files/1/0434/5040/0920/files/24521849290.pdf
    • https://cdn.shopify.com/s/files/1/0428/5032/0540/files/3rd_grade_math_diagnostic_test.pdf
    • https://cdn.shopify.com/s/files/1/0428/9386/9223/files/fixududuvasapapevimibuf.pdf
    • https://cdn.shopify.com/s/files/1/0430/7035/7653/files/miwavifepipufipokegobizil.pdf
    • https://cdn.shopify.com/s/files/1/0437/3970/9589/files/44056899539.pdf
    • https://cdn.shopify.com/s/files/1/0436/0460/7139/files/ruvaxumutavafibareza.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/35633957229.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e391.bin
ce9790ad83bce560c333c8cd62f2b93d5cfcb2ba1fcb0fe19c2e485379d61862		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE391 5304 bytes
font_01_sfnt_off0000f576.bin
5365cbd47af44c1957a500080a72a2de8227e2f6e6adf564bac3f71c3a30f5c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF576 8144 bytes
font_02_sfnt_off00010baa.bin
6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BAA 3720 bytes
font_03_sfnt_off00011705.bin
7314a8110a688275e79cb4cd5cd058a9f858becaa7f01fde0a687197ddc85302		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11705 1716 bytes
font_04_sfnt_off00011f90.bin
33fe1add60af1000662b48cc4a907b1d4492ae331a2f91f30473876aed655126		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F90 11792 bytes
font_05_sfnt_off000147b4.bin
056fe315377fc5216ca17e03b680382293c6226764c1bb4c2ddafa05433162b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x147B4 7316 bytes

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