Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac847aeb55cc107b…

MALICIOUS

PDF

47.4 KB Created: 2020-08-02 14:57:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63f066d0ec9675371c06da7dc135ab8f SHA-1: f483aa8a3eb8b18abd1e2b35542b73f8a166bf27 SHA-256: ac847aeb55cc107b51873a0d2e41364253976829e4be3c4bda6024b80e52d3d3
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, contains text related to a video game and a URL that appears to be part of a link farm designed to manipulate search engine results. The primary malicious intent appears to be directing users to potentially harmful websites through these embedded links.

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=skyrim+realistic+needs+and+diseases
    • http://files.tireddog-gooddog.com/uploads/1/3/0/7/130775563/3209473.pdf
    • http://files.fordingbridgebc.com/uploads/1/3/0/7/130740617/jupeferuwajenoj.pdf
    • http://files.propertyguardianutah.com/uploads/1/3/2/7/132712315/4017556.pdf
    • http://files.principlecleveland.com/uploads/1/3/2/6/132681617/tekeduk_zugol_getuzukunisive.pdf
    • http://files.mooneward.com/uploads/1/3/2/8/132815365/wenefavafosafin.pdf
    • https://cdn.shopify.com/s/files/1/0433/4216/8218/files/notivunuzigafi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1869/0458/files/43975523736.pdf
    • https://cdn.shopify.com/s/files/1/0434/8595/4208/files/safomalaxeranagijetow.pdf
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/fasexixosofimenep.pdf
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/bokikeborixelozaradef.pdf
    • https://cdn.shopify.com/s/files/1/0429/6110/9155/files/bakomibipalezikogovopalif.pdf
    • https://cdn.shopify.com/s/files/1/0433/4731/2789/files/linujuwafumuxogolis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9232/9119/files/25026320293.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/vagazanavugibuwaforapofoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/4599/4146/files/10064640260.pdf
    • https://cdn.shopify.com/s/files/1/0435/7970/3451/files/walevijoji.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/56601252954.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_off00007bbe.bin
ffcfd5ce261f151631deafb8bbb2305a16adc18b7c6a95464aa5f8fe2061750c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBE 5352 bytes
font_01_sfnt_off00008de0.bin
6d54d87b8ae2c460f2c9cddf3c8458823a68e25bbd3c9f8c06bd3241e5d1ebf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE0 10100 bytes

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