Malicious PDF — malware analysis report

Static analysis result for SHA-256 230de84a3327e769…

MALICIOUS

PDF

90.0 KB Created: 2020-08-05 13:26:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 555843bca63d0639a29531a838cd3f20 SHA-1: 6826aea8216f63be124d252e2c85a09f3f8261f0 SHA-256: 230de84a3327e769bfc934b9ca275a357b7df426647dc3fd25333da6413f3719
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.cc/pify?keyword=circle+geometry+worksheet+pdf', is identified as a malicious redirector. This suggests the document is designed to lure users to malicious infrastructure under the guise of educational content. No scripts were extracted from this sample.

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=circle+geometry+worksheet+pdf
    • http://files.coinsmakecents.com/uploads/1/3/1/8/131856212/7492386.pdf
    • http://files.moonphoenixrising.com/uploads/1/3/0/8/130874115/6342882.pdf
    • http://files.chicagorhythmics.com/uploads/1/3/1/6/131606121/gijiviterut-fexole-zofuzifuvoliwot.pdf
    • http://files.addycakescookies.com/uploads/1/3/1/0/131069934/6987460.pdf
    • http://files.tailwinddelivery.com/uploads/1/3/1/3/131398347/4f70fcc.pdf
    • https://cdn.shopify.com/s/files/1/0433/8611/0110/files/stihl_blowers_bg_55.pdf
    • https://cdn.shopify.com/s/files/1/0434/0183/8757/files/16651484741.pdf
    • https://cdn.shopify.com/s/files/1/0434/0485/3402/files/after_school_of_the_earth.pdf
    • https://cdn.shopify.com/s/files/1/0429/3555/0118/files/lezazapikemosoto.pdf
    • https://cdn.shopify.com/s/files/1/0429/3623/8236/files/taraneva.pdf
    • https://cdn.shopify.com/s/files/1/0437/3564/6357/files/zuwavibegidizemolabura.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexidemunuviviradepinitim.pdf
    • https://cdn.shopify.com/s/files/1/0432/2063/1720/files/posepowififebezasusoj.pdf
    • https://cdn.shopify.com/s/files/1/0429/1965/7628/files/25127422384.pdf
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/40415274911.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_off0001072b.bin
fed893138e2080dc57f5578f35f1a148faa98e54fc1e153dd8e3264659620bcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1072B 5524 bytes
font_01_sfnt_off000119e6.bin
8e94034c9083e768f0a45219cf19267caefd2fa231f092bc79bece2b79415bb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x119E6 13616 bytes
font_02_sfnt_off00014565.bin
7167acb2ec3b2093263c7f75c7b5a6e6e939286f80af06bffea75e84f32888df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14565 16068 bytes

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