Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bedb08bdeb514b2…

MALICIOUS

PDF

44.5 KB Created: 2020-08-10 08:58:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3030e7ceab7d69f7844beb459665f004 SHA-1: fbfe11162c7c33260e48a1167be73b82e338077e SHA-256: 5bedb08bdeb514b2cb21089411d76ef6eae44431e10f669207ab617edf8b26a9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests the document is part of a link farm designed to obscure malicious destinations and potentially distribute malware or phish for credentials. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=coldplay+clocks+piano+sheet+music+pdf
    • http://files.asgfitness.com/uploads/1/3/1/1/131163780/mufawel_vupetem_pexel.pdf
    • http://files.thecatholiccandlecompany.com/uploads/1/3/1/3/131398530/674569.pdf
    • http://files.psionbeta.com/uploads/1/3/1/1/131164185/kavevasuxuk-tewavoguvo-vodalufum.pdf
    • http://files.rocknewswire.com/uploads/1/3/0/8/130874488/4080896.pdf
    • http://files.i-like.org.uk/uploads/1/3/1/3/131383297/1001043.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sopituwoxo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8752/8103/files/the_power_of_intention_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/5308/0985/files/24522590519.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73768917897.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9047/files/11721655978.pdf
    • https://cdn.shopify.com/s/files/1/0428/7509/3159/files/kufofabu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3577/0532/files/fupogalifurepawamipewap.pdf
    • https://cdn.shopify.com/s/files/1/0430/9096/8729/files/awaken_healing_light_of_the_tao.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5479/files/woxumuligumava.pdf
    • https://cdn.shopify.com/s/files/1/0430/4338/9597/files/central_cabinet_ministers_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7564/1247/files/vmware_workstation_15_license_key.pdf
    • https://cdn.shopify.com/s/files/1/0432/6195/2155/files/kasazajo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5339/1780/files/pantangi_o_pambalana_worksheet.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e91.bin
b8bb5df062641b18858c4216d8c0b9d640407f32cf55ee4e446ce239e59cbadc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E91 5372 bytes
font_01_sfnt_off000080bd.bin
8361194249aecfa40c402cc737a15c0ef287b02334b3367f4d74d74183ab3f96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80BD 10444 bytes

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