Malicious PDF — malware analysis report

Static analysis result for SHA-256 45a3fd76d6331ed2…

MALICIOUS

PDF

48.2 KB Created: 2020-08-14 01:43:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e7931f535805838368440ba3b107f40 SHA-1: efaf154ceebcf4e13f6e1d252dcb1b4e47cfb0c3 SHA-256: 45a3fd76d6331ed25616d34a87167ff181263bd4ed8e83ef177144bfe7679347
120 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.com/pify?keyword=kh2+how+to+prevent+anti+form', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the intent is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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=kh2+how+to+prevent+anti+form
    • http://bepoke.station13.co.uk/uploads/1/3/0/8/130874493/basironokute.pdf
    • http://files.blackrosesdartscharity.com/uploads/1/3/0/9/130969148/0806c0.pdf
    • http://files.idzubaharin.com/uploads/1/3/1/1/131163705/sapizopu.pdf
    • http://pulew.angishearstone.com/uploads/1/3/2/6/132682883/2544166.pdf
    • http://wewep.evosilverstudio.com/uploads/1/3/0/7/130775934/xefetedav.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9789/files/6_claves_para_aprender_ingls_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/7730/2427/files/redisa.pdf
    • https://cdn.shopify.com/s/files/1/0430/6613/0593/files/que_es_un_analisis_foda.pdf
    • https://cdn.shopify.com/s/files/1/0431/1043/2929/files/commutative_ring.pdf
    • https://cdn.shopify.com/s/files/1/0429/0258/5500/files/53859266792.pdf
    • https://cdn.shopify.com/s/files/1/0448/2033/2705/files/obs_twitch_chat.pdf
    • https://cdn.shopify.com/s/files/1/0432/9956/9832/files/85203660773.pdf
    • https://cdn.shopify.com/s/files/1/0435/6122/2307/files/videoder_app_for_jio_phone.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/periodicity_notes.pdf
    • https://cdn.shopify.com/s/files/1/0431/7977/0019/files/suzeg.pdf
    • https://cdn.shopify.com/s/files/1/0434/8765/8150/files/albeniz_suite_espanola_guitar.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_off000070c2.bin
cef9f193921b24fb87c8f2ac2fbeb41a815ee4c4eee9b249d6fde1d30942d5f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x70C2 3724 bytes
font_01_sfnt_off00007dfa.bin
6bbfb3f59cd4bbf816e41398371a7b873d3768e282e5a016e8af62a9dde39779
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFA 5184 bytes
font_02_sfnt_off00008f95.bin
e50217519d18d79d07d60f3cb772dddd5b834ca6b9696927ceb891aba53379bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F95 9976 bytes