Malicious PDF — malware analysis report

Static analysis result for SHA-256 22c240aef1d67c95…

MALICIOUS

PDF

40.8 KB Created: 2020-08-15 06:06:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ba84ebf039ec214d840b3d8ca8321f0 SHA-1: 6a83b7363cf7bea1295b9986b7e6467db9c7bfc3 SHA-256: 22c240aef1d67c95d601517260361e8e7d77fd4fab9ad15951dcc1ceb8fee3b5
128 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with many links pointing to various PDF documents hosted on Shopify and other domains. One prominent link, 'https://ttraff.cc/pify?keyword=kra+cgt+guidelines', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to 'kra cgt guidelines' and the malicious URL, suggesting a lure to trick users into clicking the redirector. The presence of numerous links and the malicious redirector indicates a campaign to drive traffic to potentially harmful sites.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=kra+cgt+guidelines
    • http://files.nwraincreations.com/uploads/1/3/1/8/131856347/bojevazas.pdf
    • http://puxifed.drbriancasteels.com/uploads/1/3/0/8/130874493/7041148.pdf
    • http://files.apoiesis.com/uploads/1/3/0/7/130775505/nukupolusefovas.pdf
    • http://files.morriswomansclub.org/uploads/1/3/1/3/131382673/1103552.pdf
    • https://cdn.shopify.com/s/files/1/0441/4128/1432/files/aircrack_ng_mac.pdf
    • https://cdn.shopify.com/s/files/1/0432/8210/4478/files/puzorazimesiziberunawe.pdf
    • https://cdn.shopify.com/s/files/1/0429/1382/4927/files/2000_ford_taurus_owner_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/35571764398.pdf
    • https://cdn.shopify.com/s/files/1/0434/9345/8070/files/banasijezulinivugusit.pdf
    • https://cdn.shopify.com/s/files/1/0438/6432/6309/files/28184082101.pdf
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/debojugesuro.pdf
    • https://cdn.shopify.com/s/files/1/0435/3543/3882/files/native_american_flute_making.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36920421444.pdf
    • https://cdn.shopify.com/s/files/1/0433/9639/9269/files/admin_staff_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0432/0192/1184/files/tivofokinaga.pdf
    • https://cdn.shopify.com/s/files/1/0429/1543/0559/files/vector_of_arrays.pdf
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/56740504636.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_off00006202.bin
41ed53c47cd18e4013527404ddb886d100fce323f7d9f35f9bfdd040535cd114
pdf-font-stream PDF embedded font (sfnt) at offset 0x6202 5076 bytes
font_01_sfnt_off0000734f.bin
b6b710309779d0df157a1b9a1afba222feaa64dda2b5538afd3293d936b0a71a
pdf-font-stream PDF embedded font (sfnt) at offset 0x734F 10352 bytes