Malicious PDF — malware analysis report

Static analysis result for SHA-256 3533fafce9bbfb40…

MALICIOUS

PDF

33.8 KB Created: 2020-08-25 01:45:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b68fcf24b812738ae32d8bac3c69b269 SHA-1: df25a36417b554561959505209e9bcb71c4894d4 SHA-256: 3533fafce9bbfb40b245cef67bdda3a760cc43bd7dd17c305c321bddfcdad18e
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to movie downloads and the malicious URL. This suggests the document is designed to trick users into clicking the link, likely leading to malware download or a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bodyguard+2+tamil+dubbed+movie
    • http://files.edenbertrang.com/uploads/1/3/0/8/130814238/biwufi_nivaxevow_lukifurovo_vuted.pdf
    • http://files.wendyvarga.com/uploads/1/3/1/6/131606605/b1ac6da.pdf
    • http://tinov.harmonyhypnosiscenter.com/uploads/1/3/1/3/131383949/zipisoragog_lawurexuf_molike.pdf
    • http://files.antoniodavidsinopoli.com/uploads/1/3/0/8/130873907/4090271.pdf
    • https://cdn.shopify.com/s/files/1/0432/4301/2256/files/puninox.pdf
    • https://cdn.shopify.com/s/files/1/0431/0623/8626/files/consumer_buying_process_model.pdf
    • https://cdn.shopify.com/s/files/1/0435/6718/6079/files/10397890876.pdf
    • https://cdn.shopify.com/s/files/1/0433/3538/5243/files/84445782814.pdf
    • https://cdn.shopify.com/s/files/1/0437/8938/5888/files/radewa.pdf
    • https://cdn.shopify.com/s/files/1/0460/9032/2084/files/81159999042.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/charlie_chaplin_the_great_dictator_movie.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2954/files/sugunedasul.pdf
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/ancient_egypt_medicine.pdf
    • https://cdn.shopify.com/s/files/1/0432/3662/2498/files/rupekoxozom.pdf
    • https://cdn.shopify.com/s/files/1/0433/9141/8526/files/75250349476.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_off00004646.bin
fc71bb47cb328652ff0c07f2fbc38b4d122a6a4ffd969ea9d0b0e9f48ff026ed
pdf-font-stream PDF embedded font (sfnt) at offset 0x4646 5452 bytes
font_01_sfnt_off000058c5.bin
60a3fdaa775a4591d5b3659928aabb1bfe11047b21d3cf049cb3703b249c9c99
pdf-font-stream PDF embedded font (sfnt) at offset 0x58C5 9968 bytes