Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d286d08fb1e7004…

MALICIOUS

PDF

47.0 KB Created: 2020-09-02 00:22:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63c89797e128c1efc9d65f8e7cee38e6 SHA-1: 88270b2c8f9c5b9c6a4ab5a8d56d929ed817b1b8 SHA-256: 8d286d08fb1e7004f130ff7db04cdf0b5907ec07874d9fee28ab714515ca3435
120 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a malicious redirector link, disguised with text related to a 'Wii u emulator for android'. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=wii+u+emulator+for+android'. The document also contains a large number of embedded links, many hosted on cdn.shopify.com, which is flagged as a link farm. The PDF structure itself does not contain executable scripts, but the embedded links are designed to redirect users to potentially harmful content.

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=wii+u+emulator+for+android
    • https://cdn.shopify.com/s/files/1/0432/7879/4917/files/definicion_coliformes_totales_en_agua.pdf
    • https://cdn.shopify.com/s/files/1/0433/4495/3509/files/pexusaror.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75609531209.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8106/files/78247099608.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/salajesefafu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6605/files/wirafajibusazarirewiko.pdf
    • https://cdn.shopify.com/s/files/1/0430/3087/2215/files/42069608842.pdf
    • https://cdn.shopify.com/s/files/1/0429/0543/6326/files/67345586018.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/herbalism_leveling_guide_vanilla.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/zupuvetoxejenivisaguvaj.pdf
    • https://static.usrfiles.com/ugd/b910ae_9907c2e5478c497e9706f4782502d786.pdf
    • https://static.usrfiles.com/ugd/b8c837_c0490332ced44525988ae3e4ed2cb481.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_off00006b88.bin
eba07eb9fbf10ac537964016bf9818dd5dae5bc2d6b4a285536d3a98b0b3c5d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B88 4768 bytes
font_01_sfnt_off00007ba7.bin
a00b14eaed1feb0e9e22734260e641e6825577f13381be5c4ac74ec16fd89e1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA7 11028 bytes
font_02_sfnt_off0000a14e.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA14E 4324 bytes

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