Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a9177b918f720dd…

MALICIOUS

PDF

42.4 KB Created: 2020-08-18 23:08:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 832fdb0bbfc3aec90fdac9a6d3750931 SHA-1: c048a0907fe77fa43730f162f344eb8c724c1890 SHA-256: 8a9177b918f720dd1da42ef4267f1270cda256791798ee86433b65ac6c6499c7
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=asphalt+7+game++apkpure'. The document body, though heavily obfuscated, contains text related to 'Asphalt 7 game apkpure', reinforcing the lure. The presence of a PDF link farm heuristic further indicates malicious intent, with multiple links to external PDFs, some hosted on Shopify. The primary IOC is the redirector URL, which is likely the entry point for further malicious activity.

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/pify?keyword=asphalt+7+game++apkpure
    • http://files.mile108elementary.com/uploads/1/3/1/4/131437636/1f0c90322b4cb80.pdf
    • https://cdn.shopify.com/s/files/1/0433/9567/8357/files/rikorivaxuzez.pdf
    • https://cdn.shopify.com/s/files/1/0435/1167/7083/files/lonenabijomaburojeza.pdf
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/original_d_d_basic_set.pdf
    • https://cdn.shopify.com/s/files/1/0433/0648/3876/files/how_to_change_to_word_on_macbook_pro.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/29467814869.pdf
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/xivapazofateripinebik.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/44380671318.pdf
    • https://cdn.shopify.com/s/files/1/0433/4243/0362/files/ways_of_seeing_john_berger_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0434/5495/5672/files/17166092359.pdf
    • https://cdn.shopify.com/s/files/1/0431/1898/5377/files/ender_pearl_mod_for_minecraft_pe.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_off00006806.bin
8028f94f3f46d2b9df95950531d8ba583584eac14882b0624ee253183caa1a55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6806 5368 bytes
font_01_sfnt_off00007a27.bin
3f03c2a8336a041fdf270a60f140ac165e27539b361ad6be9459552addd294c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A27 10280 bytes

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