Malicious PDF — malware analysis report

Static analysis result for SHA-256 320b576c047c62f4…

MALICIOUS

PDF

37.7 KB Created: 2020-08-11 03:40:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 518abf0f6bb9860a04ea02873643d2ab SHA-1: d0d92a07f64c68e02138c73836f2cb0878f05c75 SHA-256: 320b576c047c62f489fabd859f4c069ec14c33a1c68d98538d49c0ec6675db4a
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying it as a link farm pointing to malicious redirector infrastructure. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=behaviour+management+book+pdf'. This suggests the document's purpose is to redirect users to malicious sites, likely for phishing or malware delivery, by masquerading as a 'Behaviour management book pdf'.

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=behaviour+management+book+pdf
    • http://jajupesi.bellannebutterflyblessings.org/uploads/1/3/1/3/131398140/nenudonenivufojusa.pdf
    • http://files.mizpah36.org/uploads/1/3/1/3/131379045/6624586.pdf
    • http://files.angelcreations73.com/uploads/1/3/1/0/131070911/xanudotadavub.pdf
    • http://bumex.unitedneighborhoodsoforange.org/uploads/1/3/1/4/131482975/zawikifibute-kurusokega-wupisego.pdf
    • https://cdn.shopify.com/s/files/1/0428/2282/8198/files/child_immunization_chart.pdf
    • https://cdn.shopify.com/s/files/1/0430/8733/1481/files/29832350738.pdf
    • https://cdn.shopify.com/s/files/1/0436/3599/8880/files/dibogup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30547733638.pdf
    • https://cdn.shopify.com/s/files/1/0441/1808/1688/files/9979503757.pdf
    • https://cdn.shopify.com/s/files/1/0435/9910/2115/files/81892110998.pdf
    • https://cdn.shopify.com/s/files/1/0434/7589/4422/files/tuzabo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6660/5211/files/gawenonelopenotipomad.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/61311900769.pdf
    • https://cdn.shopify.com/s/files/1/0437/9338/3585/files/11769129460.pdf
    • https://cdn.shopify.com/s/files/1/0432/5759/4011/files/4009261014.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_off00005318.bin
9a5d87c6a5ee03f0d7cbebbb39faa0a379f3c0c3ccb6fc23f7aab0fcd04f0d2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5318 5556 bytes
font_01_sfnt_off000065e2.bin
b59f255b5c9df0259dc336a284c682e8536e49b794cae87a0dd93d03ee12c241		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E2 10624 bytes

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