Malicious PDF — malware analysis report

Static analysis result for SHA-256 5314c638b0a12d1d…

MALICIOUS

PDF

40.8 KB Created: 2020-08-15 00:48:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c234f2a02f5639da759cdc5bd387deb2 SHA-1: 7a684289eee940334001b65ee9ed00c58db57566 SHA-256: 5314c638b0a12d1d0a6971e8cd026afab99db5b18fad85a424e1130205314332
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that is designed to lure users into downloading potentially harmful content. The document body and embedded URLs suggest a social engineering tactic, masquerading as a free PDF reader download to entice clicks. The presence of a large number of external links, many pointing to Shopify domains, indicates a link farm used for SEO poisoning to increase visibility of the malicious redirector.

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.ru/wb?keyword=free%20download%20pdf%20reader%20for%20android%202.3
    • http://files.knoxhi.com/uploads/1/3/1/8/131856672/jobivozirux.pdf
    • http://files.smwunlimited.com/uploads/1/3/0/9/130969313/7404020.pdf
    • http://files.kunsthallekleinbasel.com/uploads/1/3/0/7/130740018/palanovas.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1797/files/37300089089.pdf
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/bimedas.pdf
    • https://cdn.shopify.com/s/files/1/0431/8930/5506/files/5e_rogue_build.pdf
    • https://cdn.shopify.com/s/files/1/0429/6900/6236/files/fejeloxilolon.pdf
    • https://cdn.shopify.com/s/files/1/0434/1599/4529/files/basawesilorajab.pdf
    • https://cdn.shopify.com/s/files/1/0428/8207/2732/files/27595561715.pdf
    • https://cdn.shopify.com/s/files/1/0440/0575/2997/files/pip_local_install.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/game_theory_problems_in_operation_research.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5276/files/brazilian_portuguese_to_english_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0432/2626/7806/files/9766424859.pdf
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/nuvijoperuvazefopow.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_off00006295.bin
29f789541989116922d780d9fee93982e937edd2ff8b0e2bed6959bff7cca623		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6295 5232 bytes
font_01_sfnt_off0000748f.bin
9e6dd849e6df7d00d3c00ae6319f30925087ca47d5868185fab3d7a051f5626a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x748F 9884 bytes

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