Malicious PDF — malware analysis report

Static analysis result for SHA-256 563a625b949a5bf3…

MALICIOUS

PDF

40.7 KB Created: 2020-08-25 16:51:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b94e72bd406b3929530b621518ad9043 SHA-1: 04dd7ddbb11c6c00c4b2b550d96d80a976c812db SHA-256: 563a625b949a5bf3f43cd8d3fc19d3dbabfc969220df648d13850164591986e8
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the malicious URL and other Shopify links, suggesting a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

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/pify?keyword=grievance+letter+template+uk
    • http://wopube.dslvnjny.com/uploads/1/3/2/6/132696056/18b0ff5.pdf
    • http://files.staging.cornrowsandco.com/uploads/1/3/1/4/131407445/vibikawewizerebog.pdf
    • https://cdn.shopify.com/s/files/1/0435/4359/3109/files/perdagangan_manusia.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7884/files/aetna_better_health_of_maryland_provider_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/4732/8664/files/alcohol_phenol_and_ether_ncert_solution.pdf
    • https://cdn.shopify.com/s/files/1/0432/0781/9422/files/taxasaga.pdf
    • https://cdn.shopify.com/s/files/1/0435/0273/1430/files/61214966950.pdf
    • https://cdn.shopify.com/s/files/1/0443/0387/6252/files/best_android_studio_learning_videos.pdf
    • https://cdn.shopify.com/s/files/1/0432/1977/9742/files/89731294422.pdf
    • https://cdn.shopify.com/s/files/1/0432/8813/3787/files/nilanoxaribuwelusuxiku.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_off000063eb.bin
2be5413d1b4993e389c8bec797e9901684181188aea1c6a28fe8894f9a3c65c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63EB 5056 bytes
font_01_sfnt_off00007518.bin
7adf5467f4234fc6c41a46990250395c61fa68768e351697e754231e61e71808		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7518 9664 bytes

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