Malicious PDF — malware analysis report

Static analysis result for SHA-256 e624a57cb7a5e8ab…

MALICIOUS

PDF

52.2 KB Created: 2020-08-02 11:09:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afe9852fd75d452f56bed8a351c4c5b9 SHA-1: 2dd85a55f228b533bb07008bb74c981970a47511 SHA-256: e624a57cb7a5e8abf18e05c853bac96f956b229cf7da5a0031cdfce1cdc182e8
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The presence of a link farm suggests an attempt to manipulate search engine results or distribute further malicious content, with the primary malicious URL being a clear indicator of harmful intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=road+warrior+modded+apk
    • http://files.goodchoicedogtraining.net/uploads/1/3/1/3/131379830/7487867.pdf
    • http://files.itespto.com/uploads/1/3/1/8/131857782/jebikiriz.pdf
    • http://files.ghostinspectors.com/uploads/1/3/0/8/130813448/fegadovi-mobijubobijakap-regamofopin-bawemutaza.pdf
    • http://files.burntchef.com/uploads/1/3/1/4/131406977/vorenuxusudu.pdf
    • http://files.diananeebe.com/uploads/1/3/2/7/132740515/wejimukeluwav-dojulujugira.pdf
    • https://cdn.shopify.com/s/files/1/0434/3031/4133/files/vomefomuwenixe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7777/1164/files/sulazulo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/1268200325.pdf
    • https://cdn.shopify.com/s/files/1/0429/0124/2022/files/19954077078.pdf
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/pirase.pdf
    • https://cdn.shopify.com/s/files/1/0431/8524/2276/files/voguvi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5336/7975/files/28099546275.pdf
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/mikuwimozomo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0115/1651/files/nodukokomajiwuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/ftb_academy_mod_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/6129/6790/files/javascript_while_loop.pdf
    • https://cdn.shopify.com/s/files/1/0429/3538/6265/files/26481180657.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/36402054751.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006243.bin
b90b109c34db9b2d961be312c0c64f13ba4f5af9c83d6ae4556a72cb7f468167		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6243 2880 bytes
font_01_sfnt_off00006c81.bin
91636f1bd4af43fb601686f9a2972876c87b49f92bc44537fffc773a91895da9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C81 5056 bytes
font_02_sfnt_off00007db6.bin
deea531c34f0f1ee7107b413edd719e2c1c9a1432554ae48a127be7b433c2395		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB6 15296 bytes
font_03_sfnt_off0000ad36.bin
1da804b4add768a804dbbfbbbb747ec6be5e0775a75c76a068ae363ca5450c73		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD36 16368 bytes

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