Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cc0ea29c617a7c5…

MALICIOUS

PDF

41.4 KB Created: 2020-08-04 02:40:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7dfe83e24376e3c98264324685a991d2 SHA-1: ce5fcbe98726520fe2da44ec66dbd4b8214ab747 SHA-256: 1cc0ea29c617a7c5245c1f485c01d6a429bf3d7d6c08201ee62c72e6ab2c94c2
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, designed to appear as a legitimate document. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=ndt+level+3+basic+questions+and+answers+pdf', which is likely the primary malicious payload delivery mechanism. The document body text and embedded URLs reinforce the lure of downloading a PDF document.

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=ndt+level+3+basic+questions+and+answers+pdf
    • http://files.transformativehealingdolls.com/uploads/1/3/1/4/131406893/bosubaxufafogaxebon.pdf
    • http://files.helenheinmiller.com/uploads/1/3/2/6/132681452/3bcb17.pdf
    • http://files.cyberiadsolutions.com/uploads/1/3/1/4/131438379/josesepeluri_vutige_mizodelur_jimawegemedo.pdf
    • http://files.kingdomdetail.com/uploads/1/3/0/7/130739621/e1e76.pdf
    • https://cdn.shopify.com/s/files/1/0430/0265/8979/files/zepatijutarutifixib.pdf
    • https://cdn.shopify.com/s/files/1/0430/6714/6397/files/daseli.pdf
    • https://cdn.shopify.com/s/files/1/0430/3696/7063/files/98435782631.pdf
    • https://cdn.shopify.com/s/files/1/0433/3197/7370/files/fevim.pdf
    • https://cdn.shopify.com/s/files/1/0430/8962/5250/files/49029900938.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2857609843.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5174/files/tujalusonexewup.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/rafazunizafesovojoxaz.pdf
    • https://cdn.shopify.com/s/files/1/0440/4215/8245/files/nubewanidune.pdf
    • https://cdn.shopify.com/s/files/1/0429/1634/8071/files/share_allotment_letter_format.pdf
    • https://cdn.shopify.com/s/files/1/0432/2610/3971/files/gefadikuxumigumavisupopu.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_off00006126.bin
1191d9d3a5bceb8f2429b812438fd33854ddba6593164bc3787c8df9daa4271a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6126 5700 bytes
font_01_sfnt_off000074b0.bin
646720216d6ed243455d23b358d50e1e6d29138100337ef0bfd12fce8e3a67b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x74B0 10480 bytes