Malicious PDF — malware analysis report

Static analysis result for SHA-256 72e2de21d8d5461d…

MALICIOUS

PDF

36.9 KB Created: 2020-10-16 17:25:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25d1818e4fa8f424a54f55c068ce0b45 SHA-1: 2274076609adbee72db48cdfb30b66d7587d507d SHA-256: 72e2de21d8d5461d78dde8320a59d961f41f2992500b8269cc0334c236bddb96
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple embedded links, including one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The presence of numerous external PDF links, many pointing to SEO-optimized content, suggests a link farm or redirection scheme designed to lead users to malicious infrastructure.

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.me/123?keyword=vademecum+veterinario+ecuador+pdf
    • https://cdn-cms.f-static.net/uploads/4366348/normal_5f89a853d7d42.pdf
    • https://cdn-cms.f-static.net/uploads/4365612/normal_5f86fa81c9644.pdf
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f8750ef63ded.pdf
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f871f8628bde.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0480/9218/4740/files/7984635854.pdf
    • https://cdn.shopify.com/s/files/1/0481/3884/6359/files/97805855458.pdf
    • https://cdn.shopify.com/s/files/1/0266/8147/5264/files/93656728816.pdf
    • https://uploads.strikinglycdn.com/files/460943e9-f56e-4b56-8bcb-938fddf26631/13625926063.pdf
    • https://uploads.strikinglycdn.com/files/b527d348-78e7-4cf9-b5ad-9657f68767be/74047446378.pdf
    • https://uploads.strikinglycdn.com/files/58faa3ea-c1c5-469a-97ad-fe275915db1e/55457956529.pdf
    • https://uploads.strikinglycdn.com/files/eb37a60d-2356-4f31-9a8f-f36e876ebf64/xabofufu.pdf
    • https://uploads.strikinglycdn.com/files/daa81d93-d9ea-4492-a69a-3d58c3b08431/singular_possessive_nouns_worksheets_4th_grade.pdf
    • https://uploads.strikinglycdn.com/files/e848bf8a-64fd-4be0-a82f-ec87e6bb04aa/jukanupajunenib.pdf
    • https://uploads.strikinglycdn.com/files/58dc9e99-2e1c-4d21-abca-3698af77aefc/8939519178.pdf
    • https://uploads.strikinglycdn.com/files/72ede979-5be7-46c1-8a70-fa364c6aafc1/36655367751.pdf
    • https://uploads.strikinglycdn.com/files/f9f653f3-b2c6-47cf-8dde-cfd356404abb/43970892846.pdf
    • https://uploads.strikinglycdn.com/files/2e7fd77b-611d-44ba-8bcd-cee78a0e9ca3/82493296956.pdf
    • https://cdn.shopify.com/s/files/1/0496/6799/7849/files/hawk_freedom_squadron_mod_apk_2020.pdf
    • https://cdn.shopify.com/s/files/1/0437/5838/7354/files/et_in_arcadia_ego_brideshead_revisited.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e51.bin
5a8bc50ec2b0e677b9178ffd18bc102be15a40a378e8e3720d79e3ca2ac2843e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E51 5116 bytes
font_01_sfnt_off00005fac.bin
331822c04d10eaad411ea3c118a55240c768c2b03d519a0cc62230febad472a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAC 11192 bytes

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