Malicious PDF — malware analysis report

Static analysis result for SHA-256 530b097067879a6a…

MALICIOUS

PDF

46.2 KB Created: 2020-08-07 09:35:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82322a129ffc4e36e9204c032d8fc08d SHA-1: e71145badc316545bee3e8e1503b8b93d060580e SHA-256: 530b097067879a6a8061b69281572d9a3837b606481fd808a18a4400bb6026f7
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Bsa first aid merit badge pdf' and the malicious URL 'https://ttraff.ru/pify?keyword=bsa+first+aid+merit+badge+pdf', suggesting a lure to a malicious site. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm strategy, likely for SEO poisoning or distributing further malicious content.

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=bsa+first+aid+merit+badge+pdf
    • http://files.shopgroundzerocomics.com/uploads/1/3/2/3/132302907/pujasemutikadu.pdf
    • http://jimunozom.lilylunaa.com/uploads/1/3/1/0/131070420/sugitumidivojimizeg.pdf
    • http://nojowu.weiwutaekwondo.com.au/uploads/1/3/2/6/132681670/visarisorina.pdf
    • http://files.curebalm.com/uploads/1/3/1/4/131482941/vijeg-digarapisigedo-bobula.pdf
    • http://files.ranchochamber.org/uploads/1/3/2/6/132680890/a1bb11.pdf
    • https://cdn.shopify.com/s/files/1/0439/8009/5646/files/44577988047.pdf
    • https://cdn.shopify.com/s/files/1/0432/3196/9438/files/54627664815.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/47297001233.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1013/files/7652572645.pdf
    • https://cdn.shopify.com/s/files/1/0429/9846/4665/files/aifmd_level_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/1979/5623/files/nordic_track_2550.pdf
    • https://cdn.shopify.com/s/files/1/0435/5132/6371/files/11417332602.pdf
    • https://cdn.shopify.com/s/files/1/0435/8491/3563/files/72985718221.pdf
    • https://cdn.shopify.com/s/files/1/0432/4537/1549/files/tipos_de_convertidor_analogico_digital.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/begisubuzez.pdf
    • https://cdn.shopify.com/s/files/1/0428/2476/1507/files/bigegiroferag.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_off000076cc.bin
63badc7a6a6e02bb4646ab463bff248fa1f319d4087a7758b23b0bf082cb5fd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76CC 5516 bytes
font_01_sfnt_off00008979.bin
57020b4866b6b8a6bb3e68a66f1ae1cd17a87711d93a23e0a32b0ac819b6a63e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8979 9904 bytes

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