Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2b2b7bc246a131b…

MALICIOUS

PDF

41.6 KB Created: 2020-09-01 21:40:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25c75a4373005b395a03c71f9088b8bf SHA-1: 49b595c034a866155490e2ea23ef2a912099fc63 SHA-256: f2b2b7bc246a131b7aef450ddf51586918d690f203313fa03b91b0e2063e6ce0
94 Risk Score

Malware Insights

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

The PDF document contains a malicious redirector link disguised as a developer guide. The ML classifier strongly indicates maliciousness, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a link to known malicious infrastructure. The embedded URL, https://ttraff.cc/wix?keyword=apple+developer+swift+language+guide, is the primary indicator of compromise, likely leading to further malicious content or exploitation.

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.
  • 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.cc/wix?keyword=apple+developer+swift+language+guide
    • https://static.usrfiles.com/ugd/b8c837_23aa52622ae04cd6862ec580406df94f.pdf
    • https://static.usrfiles.com/ugd/b8c837_b684c3bbe04f4812baeb904e999776ef.pdf
    • https://static.usrfiles.com/ugd/47b1e8_e1bb2a852da64849997c5d30365dd160.pdf
    • https://cdn.shopify.com/s/files/1/0433/4478/9669/files/augmented_operator_advisor.pdf
    • https://cdn.shopify.com/s/files/1/0436/4884/3934/files/didubejurotibozojitowi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3196/9438/files/mamozox.pdf
    • https://cdn.shopify.com/s/files/1/0433/9623/5415/files/bodum_electric_coffee_grinder_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/7485/5846/files/matlab_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/9998/7873/files/brave_new_world_bersetzung_deutsch.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000588c.bin
c4fe06c127fa275777fe7d80b0b9dc8d8a1ba5298c2249c5ab1385582a15765f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x588C 5352 bytes
font_01_sfnt_off00006ae1.bin
c58734b7c43f876d00250fe79027c28030c899bcb97b97a165465ed91b27eb93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE1 2744 bytes
font_02_sfnt_off0000768b.bin
980873da297196ab48220d00dc7f88b0a98cfe3ae3122f279b70ba80525d315a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x768B 10284 bytes

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