Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb21e9e5106b2e5b…

MALICIOUS

PDF

34.0 KB Created: 2020-08-11 10:48:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f215f46dcf300e55dc5e34cf5f2e5663 SHA-1: ebfc53bad2c9a7ea58f4d8fd16b7dfc6ce0bc22c SHA-256: cb21e9e5106b2e5bd83b45aece049bb492ce68f78968eb54ecc08fb6208f8cea
152 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to domains associated with link farms and redirectors, such as ttraff.com. The document body, though heavily obfuscated, contains text that suggests a lure related to a 'Jugs softball pitching machine manual'. The ML classifier strongly indicated maliciousness, and the presence of multiple external links, including one to a known malicious redirector, supports the conclusion that this document is designed to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wb?keyword=jugs%20softball%20pitching%20machine%20manual
    • http://xilarezox.mopola.com/uploads/1/3/0/7/130776031/a916b6060e.pdf
    • http://files.beauchampfarmsva.com/uploads/1/3/1/0/131070846/2220667.pdf
    • http://files.glasgowsain.com/uploads/1/3/0/7/130739718/juvoroluseravat-febojudariba-dotofapedo.pdf
    • http://files.senefest.com/uploads/1/3/0/7/130739898/vupuleresaxujif.pdf
    • http://files.wycliffelutterworthu3a.org/uploads/1/3/0/7/130776162/7664941.pdf
    • https://cdn.shopify.com/s/files/1/0438/1874/6013/files/32109439094.pdf
    • https://cdn.shopify.com/s/files/1/0433/1801/8203/files/teruvebe.pdf
    • https://cdn.shopify.com/s/files/1/0432/3383/7219/files/lumero.pdf
    • https://cdn.shopify.com/s/files/1/0431/1266/1152/files/nomenclatura_quimica_inorganica_libro.pdf
    • https://cdn.shopify.com/s/files/1/0434/1940/2405/files/dibesaz.pdf
    • https://cdn.shopify.com/s/files/1/0439/1793/4747/files/ford_freestyle_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21086069096.pdf
    • https://cdn.shopify.com/s/files/1/0429/6274/7548/files/vuxoselilorax.pdf
    • https://cdn.shopify.com/s/files/1/0433/5026/1911/files/lugiporonidukosoxid.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/wedding_march_piano_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4280/files/10281099097.pdf
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/ge_truetemp_oven_manual.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_off0000478b.bin
71cbeb1b562d16d1bb2061348df9f919e07af85fb4a1d9bd71601f6f76439134		 pdf-font-stream PDF embedded font (sfnt) at offset 0x478B 5464 bytes
font_01_sfnt_off000059f9.bin
9e088a3e43c9cdc003c02dc39d0786ed88db2d962af930f55dae9fb5068c7883		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59F9 9860 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.