Malicious PDF — malware analysis report

Static analysis result for SHA-256 824b753f6b48d4cb…

MALICIOUS

PDF

158.7 KB Created: 2020-08-02 22:13:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e4882709960d4e687cabdd1dfc94d51c SHA-1: ba7f6d7daa233bcc81b152c8367de517c2ab8cbb SHA-256: 824b753f6b48d4cb8cd8c11974fb4f0887cd6d31629166e8e08fdca6e7a6b98a
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text referencing 'Fire emblem warriors guide' and the malicious URL, indicating a social engineering lure. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=fire+emblem+warriors+guide
    • http://files.thunderbaytheatre.com/uploads/1/3/0/7/130775679/9f467156.pdf
    • http://files.arborassociateshub.com/uploads/1/3/1/4/131453333/5139352.pdf
    • http://files.chefmaggiesfoodfest.com/uploads/1/3/1/6/131606630/suniboluri.pdf
    • http://files.musicteachers.london/uploads/1/3/2/3/132302787/rilisoxezarasis.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/vajorojefepeda.pdf
    • https://cdn.shopify.com/s/files/1/0434/1753/4629/files/24064272183.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1555/files/ronidutakugoruxoxew.pdf
    • https://cdn.shopify.com/s/files/1/0436/6116/4697/files/90507024563.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xirapekewovefosisukepeja.pdf
    • https://cdn.shopify.com/s/files/1/0435/4061/1226/files/33066584472.pdf
    • https://cdn.shopify.com/s/files/1/0432/6139/5102/files/90273714155.pdf
    • https://cdn.shopify.com/s/files/1/0432/8246/4928/files/33739644294.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/38328252275.pdf
    • https://cdn.shopify.com/s/files/1/0438/4666/4349/files/26230781849.pdf
    • https://cdn.shopify.com/s/files/1/0434/9778/3458/files/71141646720.pdf
    • https://cdn.shopify.com/s/files/1/0434/6635/8934/files/96340549711.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_off00022d4a.bin
be48bf445f2889a97f233725147ffacefc766bd9ae0db9ff34dcf3131a34244f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x22D4A 5332 bytes
font_01_sfnt_off00023f5f.bin
fe125a971cfc83cf086ffab43632a1bff8c136ef0a15c99f265ae9cfd38c5cb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F5F 14460 bytes

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