Malicious PDF — malware analysis report

Static analysis result for SHA-256 a44929e13f725aa7…

MALICIOUS

PDF

46.8 KB Created: 2020-07-31 09:20:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a0efa01fe1de54f8c5398e9c0ac352a SHA-1: 34fca8128107bb16c4aba24d0350d9d6b741aae2 SHA-256: a44929e13f725aa72659d73b614b533b8215d34cbbd1cf691f00ac042abb3b97
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. One of the primary links redirects through 'ttraff.cc', which is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'mergers and acquisitions for dummies pdf free download', suggesting a lure to entice users to click the malicious links.

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=mergers+and+acquisitions+for+dummies+pdf+free+download
    • http://files.farmgirlwriter.com/uploads/1/3/2/3/132303374/fe13b2d82d.pdf
    • http://files.vosssolutions.co/uploads/1/3/0/8/130814078/9697907.pdf
    • http://files.arcdesignstudios.com/uploads/1/3/2/7/132740292/2946464.pdf
    • http://files.shelbymrocca.com/uploads/1/3/0/7/130775776/furamebikokixejowun.pdf
    • http://files.mikelipari.com/uploads/1/3/1/0/131070846/vijowaraluditisir.pdf
    • http://files.mikelipari.com/upl
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/6339256895.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zeranosorijajigafa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/lolatulekevutes.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/seralozuxetudaxaz.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/88071091663.pdf
    • https://cdn.shopify.com/s/files/1/0438/0547/4978/files/24659944770.pdf
    • https://cdn.shopify.com/s/files/1/0435/8402/8833/files/dawefened.pdf
    • https://cdn.shopify.com/s/files/1/0430/0265/8979/files/88503294770.pdf
    • https://cdn.shopify.com/s/files/1/0431/3723/7148/files/gugalikajipoxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/dikulet.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5274/files/loponade.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_off000077fe.bin
b3f90d918c0da57bb1d3af857412170046a540c68ebc1efac5a39ad92aac1aa1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77FE 5580 bytes
font_01_sfnt_off00008af1.bin
997d868c59e44de24c565a2722f7846187c23931594dab153bd369f1250d88aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF1 10240 bytes

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