Malicious PDF — malware analysis report

Static analysis result for SHA-256 8edb477d7170e459…

MALICIOUS

PDF

42.8 KB Created: 2020-08-07 05:13:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ba35077677c9c7d536e842afd0777b9 SHA-1: 760213948ce7be1c76df2c3281ee1688a9ecfbd1 SHA-256: 8edb477d7170e459384759f1355d077754c65f8237d7ebf4934956b2f5622a9b
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate academic resources, but the primary link redirects to a known malicious infrastructure. This suggests a social engineering lure to drive traffic to a malicious site. The PDF structure and embedded links indicate a phishing or redirection attack.

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=introduction+to+academic+writing+pdf+vk
    • http://files.blankpagesworkshops.com/uploads/1/3/2/8/132814097/1f2b413b01e.pdf
    • http://files.sasmitaworld.org/uploads/1/3/1/4/131452846/jurumuvodug.pdf
    • http://files.pottershouseoceanside.com/uploads/1/3/1/1/131163635/6ef5596eabb3.pdf
    • http://files.44club.co.uk/uploads/1/3/1/4/131406274/a5d90.pdf
    • http://palotolo.wintersetumc.org/uploads/1/3/0/7/130775169/7a94ef1e3e4.pdf
    • https://cdn.shopify.com/s/files/1/0433/6189/4565/files/85191398617.pdf
    • https://cdn.shopify.com/s/files/1/0431/6738/3713/files/fool_me_once_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/4453775637.pdf
    • https://cdn.shopify.com/s/files/1/0429/0658/3203/files/biwisojakudukezawas.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5221/files/60307385869.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3541/files/19858610800.pdf
    • https://cdn.shopify.com/s/files/1/0433/3027/3435/files/reledisavugufikotitaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/azazel_isaac_asimov.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/andorra_map.pdf
    • https://cdn.shopify.com/s/files/1/0449/7784/8488/files/bank_accounting_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2384/files/allantoin_in_cosmetics.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_off00006628.bin
3288f1632bddc94e32e1ac0d91b79637a810a8498841e321b1723637e3d2af94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6628 5416 bytes
font_01_sfnt_off000078a1.bin
576d0351afad34df2495ff80c7d9dd8a2dcb64edd4ddaaf4988545dcc4151a06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A1 11276 bytes

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