Malicious PDF — malware analysis report

Static analysis result for SHA-256 c92aee7a4e6ca5a2…

MALICIOUS

PDF

42.7 KB Created: 2020-08-22 04:53:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 651fb754c41e79eb73bf4521c2cd4a32 SHA-1: 0715c8d350a7c3f064d20360cc425f48c332fd64 SHA-256: c92aee7a4e6ca5a2f473f8390491717ef28044024e64c6e3bcfc8b28504efa89
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=2019+monthly+calendar+template+word+starting+monday'. This URL is likely part of a phishing or scam campaign, attempting to lure users into downloading further malicious content. The document also contains a mass external PDF link farm, with many links pointing to Shopify domains, likely for SEO manipulation to improve the ranking of the malicious redirector. 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.com/pify?keyword=2019+monthly+calendar+template+word+starting+monday
    • http://nokow.epgxc.com/uploads/1/3/2/6/132695643/2266034.pdf
    • http://files.waytoomuchstuffintheattic.com/uploads/1/3/1/8/131872015/f1104f0b131e6a5.pdf
    • http://wurugo.bigheadtechnologysolutions.com/uploads/1/3/0/8/130814328/9837510.pdf
    • http://files.metalgardenbeds.com/uploads/1/3/0/8/130873846/d12e8ad72351.pdf
    • https://cdn.shopify.com/s/files/1/0428/1031/0822/files/17350399499.pdf
    • https://cdn.shopify.com/s/files/1/0431/0319/1193/files/54059207488.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41841620016.pdf
    • https://cdn.shopify.com/s/files/1/0429/6677/8009/files/ropelinitulimateburire.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vijufetibumumupaxewaromuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/6304/1430/files/11325757571.pdf
    • https://cdn.shopify.com/s/files/1/0434/3631/0693/files/11731939924.pdf
    • https://cdn.shopify.com/s/files/1/0428/9586/8067/files/nissan_gtr_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/dofefarosezodazule.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_off000065f3.bin
86cf04e64a4024a7e02ab02226577386431f64eb1ed566fde0fc1be922f22513		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65F3 6068 bytes
font_01_sfnt_off00007a78.bin
c1dc208f435ddc3af77c0cdce20e279bd7a9b9fc07650f3e240afa6d9db3a6ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A78 10364 bytes

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