Malicious PDF — malware analysis report

Static analysis result for SHA-256 9727746c351afc71…

MALICIOUS

PDF

41.5 KB Created: 2020-08-22 00:08:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6713ee35919627234d23a80d144d7a54 SHA-1: b3afdb9674c5a6dd632ffe49b6b8e789479e887c SHA-256: 9727746c351afc713028b946b7d991822a72584ae8164e61268a7e65d2767a6a
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=apbn+2017+kemenkeu+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which are hosted on Shopify. The document body contains garbled text but also includes the malicious URL and several other URLs, some of which are unknown or potentially malicious.

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.ru/pify?keyword=apbn+2017+kemenkeu+pdf
    • http://xasulu.identifyalaska.com/uploads/1/3/1/6/131607163/3386777.pdf
    • http://files.anglia.id/uploads/1/3/0/8/130874162/2459571.pdf
    • https://cdn.shopify.com/s/files/1/0444/4202/6150/files/relax_into_stretching.pdf
    • https://cdn.shopify.com/s/files/1/0431/0535/3885/files/gametozolawusodegogivuji.pdf
    • https://cdn.shopify.com/s/files/1/0460/1551/2735/files/fadigugolefunobajimil.pdf
    • https://cdn.shopify.com/s/files/1/0429/5298/2684/files/wosipaluxugikozota.pdf
    • https://cdn.shopify.com/s/files/1/0448/9838/6087/files/cognos_11_report_studio_permissions.pdf
    • https://cdn.shopify.com/s/files/1/0434/0760/5910/files/65791743390.pdf
    • https://cdn.shopify.com/s/files/1/0431/2327/7973/files/human_bones_file.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/summary_writing_exercises_with_answers_igcse.pdf
    • https://cdn.shopify.com/s/files/1/0432/0785/2192/files/bagupe.pdf
    • https://cdn.shopify.com/s/files/1/0438/0616/3104/files/pexubumetuzezemomiwiku.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9385/files/83516406669.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/murokujevovaxijelisi.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_off000064bb.bin
d8d28c673193a5708c9a86bab2a5bb51ca0d06c9c1b00c8b4c8a208abc204178		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64BB 5272 bytes
font_01_sfnt_off000076a8.bin
1d55312f3992702aa15dc3a914b851c354c1103a2cda49e1edb1e01082df2755		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76A8 10244 bytes

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