Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdf2583dcb18ebc3…

MALICIOUS

PDF

37.1 KB Created: 2020-08-14 22:21:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 763623ea7a059e324d913318d6f289f9 SHA-1: 39b8f2f19d81eff6392683683dd19194dea30d15 SHA-256: bdf2583dcb18ebc33236ac23542c87b0fd24f513df78baa1f32752f722203c2e
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.cc/pify?keyword=aluminium+checker+plate+sheet+suppliers+melbourne', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous benign-looking Shopify links alongside the malicious one is a common tactic to obscure the malicious intent.

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=aluminium+checker+plate+sheet+suppliers+melbourne
    • http://zuzid.meopham-allotments.co.uk/uploads/1/3/0/7/130776783/dugulebujowi_pigulal_lafipofuzaf.pdf
    • http://saneb.mcossfinishes.com/uploads/1/3/0/7/130775803/9f650e9f0b.pdf
    • http://luzim.kingsvilleroofingcompany.com/uploads/1/3/1/8/131871390/7ea2f75dc9b5.pdf
    • https://cdn.shopify.com/s/files/1/0438/4142/1472/files/blogger_template_creator_online.pdf
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/50980426570.pdf
    • https://cdn.shopify.com/s/files/1/0429/5242/5631/files/14908666535.pdf
    • https://cdn.shopify.com/s/files/1/0436/1509/2893/files/fletching_urban_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0433/1841/1417/files/xarove.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70282461387.pdf
    • https://cdn.shopify.com/s/files/1/0428/7175/0823/files/wewoferotafaxuduzonuvonan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinubigelezegir.pdf
    • https://cdn.shopify.com/s/files/1/0435/0948/1626/files/libro_aprendizajes_clave_cuarto_grado.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9434/files/3612535262.pdf
    • https://cdn.shopify.com/s/files/1/0431/1272/6677/files/77607043379.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_off000050e6.bin
677f1347a72efd5e1a6203947bba0fbd110a1f5310c196f0ddd381cd7a357e3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50E6 5368 bytes
font_01_sfnt_off000062df.bin
88ecd2ad199b351268004601be0d9cf40c0b2c29e041abf5a376dc4ea64c7a17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62DF 10712 bytes

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