Malicious PDF — malware analysis report

Static analysis result for SHA-256 49e3cbb2840543c2…

MALICIOUS

PDF

51.0 KB Created: 2020-08-19 08:40:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97e2a230cff425b111bdbe700f575894 SHA-1: b4c44489f06d96fd55284c33af7157495336a465 SHA-256: 49e3cbb2840543c297f06b8e9793850fa1e7e57d92ac451fe53eed486500f42d
150 Risk Score

Malware Insights

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

The PDF contains numerous links, including a critical redirector link to 'ttraff.cc', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=arm+cortex+a9+datasheet+pdf', indicating the lure is a datasheet. The presence of a link farm further supports the malicious intent of driving traffic to potentially harmful sites.

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=arm+cortex+a9+datasheet+pdf
    • http://files.dinothetourist.com/uploads/1/3/1/4/131409709/6473382.pdf
    • http://files.greatermidwestpb.org/uploads/1/3/2/6/132681316/1737195.pdf
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/simple_banting_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0432/9301/6232/files/52589580843.pdf
    • https://cdn.shopify.com/s/files/1/0430/3582/0185/files/94225516792.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2680/files/nedasufanujavikigibager.pdf
    • https://cdn.shopify.com/s/files/1/0433/0441/9478/files/best_app_for_reading_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/bitsat_mock_test_papers_with_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0433/9462/9786/files/day_trading_swing_trading.pdf
    • https://cdn.shopify.com/s/files/1/0433/0441/9478/files/breaking_point_book.pdf
    • https://cdn.shopify.com/s/files/1/0438/7880/9755/files/waneroroteluweximetufese.pdf
    • https://cdn.shopify.com/s/files/1/0428/8774/1607/files/advantages_of_artificial_intelligence.pdf
    • https://cdn.shopify.com/s/files/1/0435/8779/7160/files/48109522659.pdf
    • https://cdn.shopify.com/s/files/1/0436/9671/7992/files/bijebuvewidex.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_off00007ac7.bin
211dc11e262e19d4c1697ef676f85415c0ad2d69a70ebcea71e8d903b68a5359		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC7 5576 bytes
font_01_sfnt_off00008d92.bin
7d98d9996dcdf5d46501a6655572a2dfd34df3f2b986cf923ab146d6847f77e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D92 15796 bytes

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