Malicious PDF — malware analysis report

Static analysis result for SHA-256 be600aa0a51fe306…

MALICIOUS

PDF

43.8 KB Created: 2020-08-24 06:27:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85d7f925521a7a02adb2e79fd98e3420 SHA-1: 7c2307fc068ee6c90c6c569e0402d5516eb38d69 SHA-256: be600aa0a51fe306f791a25dd6904c60b15903e0c0e43d3602a0627c4b6b651c
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is further supported by the presence of a link farm. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=autocad++2013+gratis, indicating a lure for free software. This URL is designed to redirect users to malicious infrastructure, likely for further exploitation or malware delivery.

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=autocad++2013+gratis
    • http://podibedep.deepgreenbushschool.org/uploads/1/3/1/1/131164250/2679965.pdf
    • http://wegabaw.murchiebhs.com/uploads/1/3/1/3/131378970/8603296.pdf
    • http://files.astrologermaggie.com/uploads/1/3/1/3/131380495/9ccbcf0.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/rubomum.pdf
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/3123113964.pdf
    • https://cdn.shopify.com/s/files/1/0431/4926/3004/files/toxis.pdf
    • https://cdn.shopify.com/s/files/1/0433/6916/9054/files/piriformis_muscle_injection_uk.pdf
    • https://cdn.shopify.com/s/files/1/0431/2901/2381/files/xaxopigeritew.pdf
    • https://cdn.shopify.com/s/files/1/0439/0731/7912/files/auto_collision_reporting_centre_near_me.pdf
    • https://cdn.shopify.com/s/files/1/0432/8793/7179/files/fuposovisitigup.pdf
    • https://cdn.shopify.com/s/files/1/0434/2890/5127/files/67880901427.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/40100945909.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/gawefigapapasajovanog.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/wodexive.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_off00006bf3.bin
5e282a42aaddf4c8e0743b21c46b085350a3b9b0fa89e41fd737c80773712e83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF3 5556 bytes
font_01_sfnt_off00007ede.bin
9fbee2f0b58d8dd39e62db08bd6b4c3fcef7859e5d15d684f06f03e018799df2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDE 10636 bytes

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