Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9831d9ff915a96c…

MALICIOUS

PDF

41.1 KB Created: 2020-08-08 09:03:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 834ea65b6790c8320f6d7246e8a170a3 SHA-1: 1cf61376e96f2247aa48175b54a6ef6d7b5ce87e SHA-256: d9831d9ff915a96c6ea8adc45d560e599edb997401b42a4507b76a3040b9d1b9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The primary malicious URL is 'https://ttraff.com/pify?keyword=adventure+travel+trade+association+pdf', which is likely used to redirect users to a phishing or malware-hosting site. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=adventure+travel+trade+association+pdf
    • http://files.capital-homecare.com/uploads/1/3/1/4/131407112/c43bb5a001d1339.pdf
    • http://files.pst4y.org/uploads/1/3/0/7/130738814/piwagitasesesuwatug.pdf
    • http://files.matthewjgoodwin.org/uploads/1/3/1/4/131453902/7c3e1b27e.pdf
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/motorola_modem_login.pdf
    • https://cdn.shopify.com/s/files/1/0430/4722/3458/files/denedawijamewuvuxeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bararilisubolubudikolumo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1167/7083/files/cecelia_ahern_where_rainbows_end_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9321/2827/files/xitetibevufupizoba.pdf
    • https://cdn.shopify.com/s/files/1/0437/5193/2056/files/xedavaxojejepudaviv.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3639/files/prueba_de_bondad_de_ajuste_ejercicios_resueltos.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/midalibiket.pdf
    • https://cdn.shopify.com/s/files/1/0428/3914/6662/files/28340043931.pdf
    • https://cdn.shopify.com/s/files/1/0431/5542/3383/files/juwetowekofarufef.pdf
    • https://cdn.shopify.com/s/files/1/0431/3477/9553/files/94935583340.pdf
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/pozoluk.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_off000063d4.bin
04f33e10c1f3e51d040df01bb78603aa36a0506d3d997843c35ae6ba8632c20d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63D4 5196 bytes
font_01_sfnt_off00007598.bin
e4e7bb651c19c8fd05872b114aad85d2d6c7e3319e01285716b498b21139959c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7598 9936 bytes

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