Malicious PDF — malware analysis report

Static analysis result for SHA-256 bde187136414d20c…

MALICIOUS

PDF

45.2 KB Created: 2020-08-04 15:02:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe094486daa3720949e8c5af1c999396 SHA-1: 8124baa982a038a6f46eb2660dd39f5cdefcfb02 SHA-256: bde187136414d20c636bdd8cd6890851fb5ed511dbda457c3cc8c42ed8d6a9d1
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, though heavily obfuscated, contains text related to '3ds max tutorials pdf for beginners free download' and a URL that matches the malicious redirector. This indicates a social engineering attempt to trick users into visiting malicious sites under the guise of providing free learning resources.

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=3ds+max+tutorials+pdf+for+beginners+free+download
    • http://positit.daankools.com/uploads/1/3/1/8/131856543/jopipevuro-lulav-xazovuv-zixujef.pdf
    • http://files.evanhgermann.com/uploads/1/3/0/8/130814070/fenijuvejisumumuk.pdf
    • http://files.wrapfishingsystem.com/uploads/1/3/0/7/130738998/57598.pdf
    • https://cdn.shopify.com/s/files/1/0450/8883/3701/files/minecraft_wizard_house.pdf
    • https://cdn.shopify.com/s/files/1/0433/5455/4533/files/80467880598.pdf
    • https://cdn.shopify.com/s/files/1/0437/0441/8459/files/73531597031.pdf
    • https://cdn.shopify.com/s/files/1/0427/6345/2583/files/31444127729.pdf
    • https://cdn.shopify.com/s/files/1/0435/2606/2239/files/39989926559.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/dujaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0393/5911/files/wufubepoxodivo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/95473771367.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/68302748890.pdf
    • https://cdn.shopify.com/s/files/1/0433/4728/0026/files/54659320332.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.pdf
    • https://cdn.shopify.com/s/files/1/0431/0794/2549/files/17123318889.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_off000063ae.bin
29c1717e941622095fbc1dd4d5d8ebe29cbee868e31788300345284c7a19cfb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63AE 5612 bytes
font_01_sfnt_off000076b4.bin
02428b012cf5f50f786e8f0851f59ffc350630b0e742a52f55bd786e4ac40938		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76B4 10076 bytes
font_02_sfnt_off00009923.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9923 4324 bytes

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