Malicious PDF — malware analysis report

Static analysis result for SHA-256 af75ddbd9f48fdd1…

MALICIOUS

PDF

36.2 KB Created: 2020-08-11 00:18:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52b69b52e24f90bc9aa9d6ab3fe1c7ff SHA-1: c539ab7d9a4ab5888b88aab80868b3331d737b79 SHA-256: af75ddbd9f48fdd151ba7a6339b6467496ced529437d0b6b463b32730db5b708
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to mimic legitimate document downloads, but the primary link redirects to a known malicious domain (ttraff.ru). This suggests a phishing or redirection attack aiming to lead users to malicious content. The document body itself contains obfuscated text and references to the malicious URL, reinforcing the attack vector.

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=career+development+interventions+in+the+21st+century+3rd+edition+pdf
    • http://files.timelessartist.com/uploads/1/3/1/4/131453456/5468720.pdf
    • http://files.sproutandgrow.org/uploads/1/3/1/1/131163615/3240320.pdf
    • http://jowulixov.brickandbaking.com/uploads/1/3/1/4/131438667/fekidobuz.pdf
    • http://files.reeftheband.com/uploads/1/3/1/4/131453969/66901.pdf
    • http://files.huimalamaokekai.org/uploads/1/3/1/3/131382583/vewaj.pdf
    • https://cdn.shopify.com/s/files/1/0440/4091/3046/files/jibarujotufim.pdf
    • https://cdn.shopify.com/s/files/1/0437/5488/1175/files/definisi_batik.pdf
    • https://cdn.shopify.com/s/files/1/0433/9639/9269/files/agendas_2020_para_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0433/6238/6079/files/79600847545.pdf
    • https://cdn.shopify.com/s/files/1/0433/5140/8799/files/47496731927.pdf
    • https://cdn.shopify.com/s/files/1/0429/5327/7589/files/tamivefaja.pdf
    • https://cdn.shopify.com/s/files/1/0435/2986/3323/files/vatexesedumusojemepepamu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/zadoxabikiremoj.pdf
    • https://cdn.shopify.com/s/files/1/0439/3703/8494/files/tafewiki.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_off00004dda.bin
823dc40401a8fcb96aa97b6019bf71c4941a4ef688b0213bfb308b6bb3de4654		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DDA 5812 bytes
font_01_sfnt_off0000618b.bin
d4b0cb6d1eec733e5f7e7ca0821375ab90243c662250858e6e8496057518a90f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x618B 9888 bytes

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