Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee131e890ce583db…

MALICIOUS

PDF

53.2 KB Created: 2020-08-22 19:38:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3b1e11c9884e993e8cc0e9e6fd084eb SHA-1: 825a6d64e22741360bdea7e9bcf4adbc43bb379e SHA-256: ee131e890ce583db3e2ec19292fcde4819a9c3123ca10b428332426d2e20a1cb
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One prominent link, 'https://ttraff.com/pify?keyword=arduino+arbitrary+waveform+generator', is flagged as malicious. The presence of many links, including those hosted on cdn.shopify.com and other domains, suggests an attempt to manipulate search engine results or redirect users to potentially harmful content. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=arduino+arbitrary+waveform+generator
    • http://files.cappatagglens.com/uploads/1/3/1/6/131606289/ab8513086f.pdf
    • http://dawam.artandeyecandy.com/uploads/1/3/2/7/132712461/9905477.pdf
    • http://files.reneeisverycool.com/uploads/1/3/1/8/131856041/butumagitexo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasamonuje.pdf
    • https://cdn.shopify.com/s/files/1/0433/6078/0443/files/perewegidosu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1731/3176/files/jamobujawanew.pdf
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/sugikibunex.pdf
    • https://cdn.shopify.com/s/files/1/0435/7446/0579/files/13570649770.pdf
    • https://cdn.shopify.com/s/files/1/0445/6343/1588/files/air_prevention_and_control_of_pollution_act_1981_maharashtra.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8282/files/25956385668.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/mimaji.pdf
    • https://cdn.shopify.com/s/files/1/0433/7798/3653/files/jesavaxazepademis.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_off00007fea.bin
f9c3bbf285eac87227ccdeb946084475e4b1edd6ea83f0233b89f7e68527bd50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FEA 5280 bytes
font_01_sfnt_off000091e4.bin
d9ca657485a204090014b655ca2bef2b2a09f728c013cd95fd26ccdf2168a07b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91E4 12444 bytes
font_02_sfnt_off0000b9ba.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9BA 4324 bytes

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