Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab61229519e0242e…

MALICIOUS

PDF

49.7 KB Created: 2020-08-11 06:02:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8135a6d31ee424e78ff0f45fa7e0d20d SHA-1: ee24b895749a44c142c600d3078fb4adabc062fa SHA-256: ab61229519e0242e99a847ccb5ac5abcaa9c0519400efb0a5e3d2c33b31954ff
120 Risk Score

Malware Insights

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

The PDF document contains numerous links, including one pointing to a known malicious redirector at https://ttraff.ru/pify?keyword=substation+automation+system+architecture+pdf. This indicates a phishing or social engineering attempt to redirect the user to malicious content. The document body, though heavily obfuscated, contains references to the target URL and other benign-looking PDF links hosted on Shopify, likely to lend legitimacy to the overall lure. 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=substation+automation+system+architecture+pdf
    • http://files.chadandre.com/uploads/1/3/0/7/130775062/cd13b290cb5ae4d.pdf
    • http://files.lightonwatertcm.com/uploads/1/3/1/4/131437862/sutodew.pdf
    • http://files.bagsofnaturestore.com/uploads/1/3/1/4/131453268/gililujozeve.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/36920973212.pdf
    • https://cdn.shopify.com/s/files/1/0431/1390/6327/files/51761420532.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/head_first_sql.pdf
    • https://cdn.shopify.com/s/files/1/0432/9770/2046/files/pekafafi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9670/files/wexozoperaginizujuwuraxuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zisavugeti.pdf
    • https://cdn.shopify.com/s/files/1/0440/9946/9464/files/37921440553.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/aprendizajes_clave_secundaria_ingles.pdf
    • https://cdn.shopify.com/s/files/1/0432/2846/3271/files/gm_to_m.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/36997199969.pdf
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/bokaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1087/files/sound_pollution_in_marathi_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/1131/7658/files/air_force_question_paper_with_answer.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_off000083b9.bin
1d9046d7983cbb395d798ff6071d4eaaa370fc8a84a1a3f74da1c02efc796018		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83B9 5708 bytes
font_01_sfnt_off000096f1.bin
14144ea95e450413ccddf429249d69667c9cd6adab0b3998dd373bb67ec548f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96F1 10144 bytes

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