Malicious PDF — malware analysis report

Static analysis result for SHA-256 031c80ab0a8f2047…

MALICIOUS

PDF

73.9 KB Created: 2020-08-02 13:20:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e07d4fc56f6429d215b7322577a87d9 SHA-1: 3937bd7b13ba14453f89da2f1808abb679a6ec91 SHA-256: 031c80ab0a8f2047c14facdacc1b2594a568ef08952f305932023a2d7a99fcec
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised with the text "Kodi configurator for android". The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this malicious intent. Additionally, the PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, suggesting a campaign to distribute malicious content or engage in SEO manipulation. The ML classifier also strongly flagged this PDF as malicious.

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=kodi+configurator+for+android
    • http://files.pediatricwellness2019.com/uploads/1/3/1/6/131636927/5bb32662003645.pdf
    • http://files.handhinsurance.net/uploads/1/3/1/3/131382092/xovebanedugijexu.pdf
    • http://files.organizedbyadrienne.net/uploads/1/3/1/6/131637099/ketudixuwi-witepu-nikidupud-dijemimof.pdf
    • http://files.saolinguyen.com/uploads/1/3/1/6/131637640/5929470.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5791/3749/files/mivofimenizotiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/6265/7177/files/bibijomiziledaziditawofu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/zewajudazifoxizozadas.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/10283601675.pdf
    • https://cdn.shopify.com/s/files/1/0435/4228/2399/files/kebesi.pdf
    • https://cdn.shopify.com/s/files/1/0429/4439/7468/files/93146944663.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/pirova.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/dodofitabuwipigigisop.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/46065514205.pdf
    • https://cdn.shopify.com/s/files/1/0430/2287/6826/files/19327299558.pdf
    • https://cdn.shopify.com/s/files/1/0430/8579/1393/files/9114462886.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0487/files/tovuvomebu.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d001.bin
03193250eb09a69c1f5d8b6b9297c9980d873ed9d452853cac5fae5d16c7e9d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD001 4948 bytes
font_01_sfnt_off0000e0ef.bin
e53a330f7b469a452724f8ceb520a5ae60772b9c2252ca6aa312a645820cfb37		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0EF 10392 bytes
font_02_sfnt_off000104af.bin
bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104AF 16312 bytes

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