Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbd5b07398a306ad…

MALICIOUS

PDF

45.5 KB Created: 2020-07-29 17:11:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4aca02bc585ab5e526110607bf828a04 SHA-1: 74ee08e60fb291b2fc5c7fafb96c75bddf80eb75 SHA-256: fbd5b07398a306ad0ff0d0e14ad198a130e40f68fb3d16351c840434a51e443e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to animal names and pictures, likely to entice users to click the embedded links. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link to malicious infrastructure.

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.cc/pify?keyword=a+to+z+animals+name+with+picture+pdf
    • http://files.smile-movement.com/uploads/1/3/0/8/130814032/183ec971b610.pdf
    • http://files.sarahelizakelly.co.uk/uploads/1/3/1/4/131453674/tovoke.pdf
    • http://files.louisescott-bushell.com/uploads/1/3/1/3/131398145/zedurilekibolezubo.pdf
    • https://cdn.shopify.com/s/files/1/0434/9421/1750/files/2911708068.pdf
    • https://cdn.shopify.com/s/files/1/0438/2582/3906/files/linamajibanovaxomokepa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0460/8155/files/tusizemosatusowelezisut.pdf
    • https://cdn.shopify.com/s/files/1/0438/3031/3122/files/57606082952.pdf
    • https://cdn.shopify.com/s/files/1/0429/9839/9139/files/vijekatimojotikakomarolel.pdf
    • https://cdn.shopify.com/s/files/1/0434/0698/3318/files/38233852404.pdf
    • https://cdn.shopify.com/s/files/1/0436/2423/5170/files/delijezopasawadixuvo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8317/7885/files/wisutiresadufunubowuboxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0099/5741/files/nexaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/jopejurusuzapif.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/50079865375.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_off00007424.bin
c9cb456de4544b51572178caba469841e9010f2732ca55a745155857f4b9dd0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7424 5408 bytes
font_01_sfnt_off0000866f.bin
717640f09fe96e14e889ebaba11c104463e3d2a587c690308fad5bc3ab161a6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x866F 10280 bytes

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