Malicious PDF — malware analysis report

Static analysis result for SHA-256 e41df9dbbbc2b3f1…

MALICIOUS

PDF

44.8 KB Created: 2020-08-01 23:40:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 046d6819f89e41a8fa37b1a62e197c12 SHA-1: 520a031373cbc864d0823578fb2f4b6e966b6256 SHA-256: e41df9dbbbc2b3f1a1d7e1242e42df97fbfec44d613df764014b83b8dc1f5398
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK, pointing to 'https://ttraff.cc/pify?keyword=draught+of+peace'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to other PDFs, as flagged by PDF_SEO_LINK_FARM. The ML classifier also strongly indicated maliciousness. These factors suggest the document's primary purpose is to lure users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=draught+of+peace
    • http://files.williamsburgrec.com/uploads/1/3/2/6/132682745/tagogumolizim_fofuzipupi.pdf
    • http://files.jinkymarsh.com/uploads/1/3/1/3/131380480/bilota_goras.pdf
    • http://files.kerenvishny.com/uploads/1/3/1/3/131379496/gapufojofuwu_bizaf_xiguzakume_taroxipeg.pdf
    • http://files.m3dance.com/uploads/1/3/1/8/131856518/tulaburozo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/74826696628.pdf
    • https://cdn.shopify.com/s/files/1/0436/1761/6034/files/tiwesijotemexigoteruvoros.pdf
    • https://cdn.shopify.com/s/files/1/0433/6903/7974/files/rivejofupunazosugawa.pdf
    • https://cdn.shopify.com/s/files/1/0436/3884/9696/files/zafigajafovi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8832/1435/files/2476343885.pdf
    • https://cdn.shopify.com/s/files/1/0430/3385/4101/files/gta_san_andreas_mission_guides.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/gigawezuruvixiju.pdf
    • https://cdn.shopify.com/s/files/1/0437/8466/7297/files/60435954789.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9027/files/56486914598.pdf
    • https://cdn.shopify.com/s/files/1/0431/5542/3383/files/19716635573.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/mivogefoda.pdf
    • https://cdn.shopify.com/s/files/1/0432/2213/9041/files/tokokexu.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_off0000734c.bin
e78827bee69f55aa6afd828ebae7ae191f3211b42eab43d7bb1bea4cc5fef6ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x734C 5064 bytes
font_01_sfnt_off00008491.bin
fd5ee6e65defc61f6b6317a2e0aa9447118d100ea0a51b21548f78d682cec4dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8491 9880 bytes

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