Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6cd2cd8264facfe…

MALICIOUS

PDF

36.9 KB Created: 2020-08-29 11:37:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c84be2c6d81ae453889604152baae92 SHA-1: 0699053e232b30c16687b9c1d544b018f4c47806 SHA-256: c6cd2cd8264facfee519f154f7b77d9f0a10caee1db5eae11b0557d05a84094f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=examen+segundo+grado+bloque+1+2017'. Additionally, it exhibits a PDF link farm behavior, embedding numerous links, with the first identified as 'https://cdn.shopify.com/s/files/1/0435/7432/9499/files/jawadipinewajubaru.pdf'. The document body, though partially corrupted, contains text related to an exam and the malicious URL, suggesting a lure 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/wix?keyword=examen+segundo+grado+bloque+1+2017
    • https://cdn.shopify.com/s/files/1/0435/7432/9499/files/jawadipinewajubaru.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/99604668444.pdf
    • https://cdn.shopify.com/s/files/1/0428/9898/1030/files/11146800471.pdf
    • https://cdn.shopify.com/s/files/1/0433/6589/2245/files/ceptam_09_tech_a_admit_card.pdf
    • https://cdn.shopify.com/s/files/1/0433/3076/4955/files/kagamaruwe.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8863/files/96650818674.pdf
    • https://cdn.shopify.com/s/files/1/0434/6019/8557/files/vifoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5696/3479/files/sekiro_ending_guide_spoiler_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/5387/5357/files/lobusamidemivugoteja.pdf
    • https://static.usrfiles.com/ugd/b8c837_019bf0379c7b4e1faca1db5e2cfd3c5d.pdf
    • https://static.usrfiles.com/ugd/b8c837_c5f6dfe210794c2e96f1f9578585724d.pdf
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/26309768082.pdf
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/newesogawisofaduv.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_off00004d63.bin
3d598ab1c491c0ed43c3c3fbbd3a242ab854c1b69ebb8252d51b9296b265eb49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D63 5844 bytes
font_01_sfnt_off00006130.bin
19915b48ee672afd4fa2da4e6fa4a5055327690aa19fdeef2b71d473dbd49022		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6130 11224 bytes

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