Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fd28162944bbb5b…

MALICIOUS

PDF

44.8 KB Created: 2020-08-16 11:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bb9fdb887006855bfd9472ce6437d6f SHA-1: be1455fda03a79d069601444d718de89abda1bb8 SHA-256: 3fd28162944bbb5bf9cd89b9f561986639b4db7e4cc3894e4a7d2d656505b2fd
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Ankusham movie free' and the malicious URL, suggesting a lure for users seeking free movie downloads. The presence of numerous links, including those hosted on Shopify, indicates an attempt to create a link farm for SEO manipulation or to distribute malicious content.

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=ankusham+movie+free
    • http://vutitebe.1procurementplace.com/uploads/1/3/0/7/130739860/187cfee.pdf
    • http://sadek.laurakhuber.com/uploads/1/3/0/8/130873826/e6051853.pdf
    • http://files.countyparkfriends.org/uploads/1/3/0/8/130814279/zobisulit_selitiga_sojinotavom.pdf
    • http://files.nightridersnh.com/uploads/1/3/1/4/131409309/aa0c48617.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupesuditijativerawepafu.pdf
    • https://cdn.shopify.com/s/files/1/0441/2715/8424/files/pugisumiremabive.pdf
    • https://cdn.shopify.com/s/files/1/0437/2017/9864/files/2993709240.pdf
    • https://cdn.shopify.com/s/files/1/0429/7854/1722/files/dobijal.pdf
    • https://cdn.shopify.com/s/files/1/0449/8338/6280/files/46763611841.pdf
    • https://cdn.shopify.com/s/files/1/0436/7273/1801/files/bevington_shakespeare.pdf
    • https://cdn.shopify.com/s/files/1/0440/6027/8936/files/84722840263.pdf
    • https://cdn.shopify.com/s/files/1/0433/3689/2584/files/pagirulagu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064bf.bin
fc9d6ad7a70aa56008725c6604ffcf7833c69e223cba089edb9b6f03983040b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64BF 5088 bytes
font_01_sfnt_off000075e8.bin
dd8cf63636971ba5f3d3031331051606383d6dd4be108ab45a84ab423eed5b64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E8 3884 bytes
font_02_sfnt_off00008534.bin
ea3741c8d75d70cfd810cc51076f5adaceea5cf01e534793898e2c8b30273a87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8534 9736 bytes

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