Malicious PDF — malware analysis report

Static analysis result for SHA-256 be37225350f355c9…

MALICIOUS

PDF

53.5 KB Created: 2020-08-12 01:37:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d22b76680ccee2e54dd921ee8621d92 SHA-1: b29a1b11fd3441155e8b5b18af46270396526ac6 SHA-256: be37225350f355c908217dbe7ac8b62b7fc70408640741557320788f429f21c0
120 Risk Score

Malware Insights

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

The PDF document contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting the document's primary purpose is to distribute links to potentially malicious content. The presence of the malicious redirector URL further supports this assessment.

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=adobe+illustrator+als+pdf+exportieren
    • http://files.emilyscudderpoetry.com/uploads/1/3/0/7/130739684/123101.pdf
    • http://tajovitej.livebreathelovecreate.org/uploads/1/3/0/8/130874038/delovogesazejix-poval.pdf
    • http://files.michiganate.org/uploads/1/3/1/8/131859895/doneladanarejiteki.pdf
    • http://tafise.storywings.net/uploads/1/3/1/3/131383651/wuxukujoxa.pdf
    • https://cdn.shopify.com/s/files/1/0432/7545/2569/files/24447001017.pdf
    • https://cdn.shopify.com/s/files/1/0435/6990/5825/files/wuzumokisinem.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8889/files/55358156662.pdf
    • https://cdn.shopify.com/s/files/1/0430/5348/2138/files/repewalorunotuvawizemoban.pdf
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/bolaxoxumilelunogaxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7208/5397/files/54105635821.pdf
    • https://cdn.shopify.com/s/files/1/0434/5154/7800/files/1281473453.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8550/files/vizijuzafikunirifi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/suton.pdf
    • https://cdn.shopify.com/s/files/1/0434/7923/6774/files/mopifuvututugomebo.pdf
    • https://cdn.shopify.com/s/files/1/0439/4074/1275/files/wosujoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0714/7166/files/kutagububeziwela.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_off00009050.bin
8bdf5238842198df276d83ce4dad37f9b83e13e11b26e618c35caa5bc6c18aad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9050 5232 bytes
font_01_sfnt_off0000a227.bin
136a4d31ed2478edeeca9c954efe1a17c3492b613030ecbdc534cdf628626253		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA227 11432 bytes

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