Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d9879f24bcbf0a3…

MALICIOUS

PDF

46.7 KB Created: 2020-08-24 08:14:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bbbf6eb6625b582c64604c68f528754 SHA-1: 353ae03cdb5d69645d6de1fca2ceaac1f36c6478 SHA-256: 4d9879f24bcbf0a3a8326fd4b4966a20161889339ecf02fc2a0f8c35080bd0fb
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a redirector service. The document body text, though heavily obfuscated, contains a URL that appears to be a lure for free software. The primary heuristic indicates the PDF links to known malicious redirector infrastructure, suggesting the intent is to redirect users to a malicious site. No scripts were extracted from this sample.

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=cisco+network+recording+player+free
    • http://xozivuli.ftjbymelissa.com/uploads/1/3/1/1/131164250/wetamejaguxep.pdf
    • http://files.bogardfarmsllc.com/uploads/1/3/1/4/131438240/3848cf256.pdf
    • http://files.uovooo.com/uploads/1/3/0/7/130739718/wububedolo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4274/3207/files/dojavifuviloxuv.pdf
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/weather_report_for_durban_this_weekend.pdf
    • https://cdn.shopify.com/s/files/1/0439/8402/7806/files/bottesford_primary_school_ofsted_report.pdf
    • https://cdn.shopify.com/s/files/1/0428/9321/3855/files/23071709682.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0300/files/wetuwakokekawa.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/91432794101.pdf
    • https://cdn.shopify.com/s/files/1/0434/0993/2440/files/lesco_mower_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/5063/0296/files/basic_electronics_nptel.pdf
    • https://cdn.shopify.com/s/files/1/0427/4946/0636/files/airman_certification_standards_private_pilot_airplane.pdf
    • https://cdn.shopify.com/s/files/1/0429/4872/2851/files/pixujixod.pdf
    • https://cdn.shopify.com/s/files/1/0435/9910/2115/files/wevupuragozodojebebujuvol.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067ed.bin
3c082ec745cbde864c58583838e1bd4357ca1e6d828db1b8865a6f468e39b988		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67ED 5392 bytes
font_01_sfnt_off00007a66.bin
faae88264adcdcca8403c9b3f4825b13e140d1a3f9830aaa72d92026b6f7a836		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A66 11048 bytes
font_02_sfnt_off0000a003.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA003 4324 bytes

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