Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f5ddec09a639ba3…

MALICIOUS

PDF

41.4 KB Created: 2020-08-24 12:58:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99221194b6b80c0e54aa576fa763acea SHA-1: 67a5edae0c195bb90379fa58181f975f671cccc2 SHA-256: 1f5ddec09a639ba38b478120448692df552c891eae8c9b73f984b2e2115f80ee
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=peptic+ulcer+pdf+2018, which is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack chain. The presence of many external links, including benign ones from Shopify, suggests a link farm or SEO poisoning tactic to increase visibility.

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.com/pify?keyword=peptic+ulcer+pdf+2018
    • http://files.baak.ca/uploads/1/3/1/4/131437655/98677.pdf
    • http://files.called2lead.com/uploads/1/3/0/7/130739947/5029404.pdf
    • http://files.budgetbrickandstone.com/uploads/1/3/2/3/132303382/1315f2bb911.pdf
    • http://boxog.savethebear.org/uploads/1/3/0/9/130969600/8f46cf16f3.pdf
    • http://gazite.smallwonderskennel.com/uploads/1/3/0/7/130775045/4915b.pdf
    • https://cdn.shopify.com/s/files/1/0432/1460/2401/files/administering_a_sql_database_infrastructure_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/4976/0406/files/5.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/reea_feat_akcent_rain_song_free.pdf
    • https://cdn.shopify.com/s/files/1/0464/6676/0856/files/add_bluehost_email_to_android.pdf
    • https://cdn.shopify.com/s/files/1/0435/1960/6936/files/38498490580.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fasexerogetotano.pdf
    • https://cdn.shopify.com/s/files/1/0448/0407/9777/files/basic_english_words_for_daily_use.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_off00006335.bin
b76ead3f738fcea7cd38d83abf61f1c20a8055e0c7f6cefed284222b09c06286		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6335 5284 bytes
font_01_sfnt_off00007543.bin
8be15a89fae56faea6073e497d11d138f990e33a3380479a4ae27b693964efe4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7543 10636 bytes

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