Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1a3bda67f7bf3c3…

MALICIOUS

PDF

40.3 KB Created: 2020-08-20 02:48:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c2ded8b635ecc921a7c37a29f6ab204 SHA-1: f7fedab95b5b40b3b83279899b8ee0001efbda43 SHA-256: c1a3bda67f7bf3c3e06b1112855444a3ea163aa7c23796cf80ada58d430aef5f
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of external links, suggesting a link farm or phishing lure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=epo+guidelines+intermediate+generalization. The document body contains garbled text but includes the same malicious URL and several benign-looking Shopify URLs, along with other suspicious URLs hosted on various domains. 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.ru/pify?keyword=epo+guidelines+intermediate+generalization
    • http://files.littlepoppitsphotography.com/uploads/1/3/0/7/130740573/57d8b69405.pdf
    • http://lepoxe.the-songbirds.com/uploads/1/3/1/3/131398504/zagagum.pdf
    • http://files.durjavaoriginals.com/uploads/1/3/2/7/132712093/vozemawobuveni-fovaja.pdf
    • http://files.chardonnayhoa.com/uploads/1/3/2/6/132696113/7518133.pdf
    • http://nekebex.woodfieldparkbaptistchurch.com/uploads/1/3/1/4/131408899/d42cf.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2859/files/9475865735.pdf
    • https://cdn.shopify.com/s/files/1/0435/9648/0671/files/54514523102.pdf
    • https://cdn.shopify.com/s/files/1/0433/9938/1157/files/10550023572.pdf
    • https://cdn.shopify.com/s/files/1/0430/9739/1265/files/47759698565.pdf
    • https://cdn.shopify.com/s/files/1/0428/6971/9196/files/domagetozozavugaro.pdf
    • https://cdn.shopify.com/s/files/1/0435/0866/2440/files/kipofutudanivigisatemib.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1621/files/too_many_items_1._13._2.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2564/files/baxaweg.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_off00006037.bin
19636c6dde2cc90f81de5ac3d0256688cf7fb0861fdca3b7a6a25368f9241a96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6037 5284 bytes
font_01_sfnt_off00007221.bin
81c5d05e190e21cca735a35c345f160fd05272db0a569d8e8b165fd4c13ae3e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7221 10028 bytes

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