Malicious PDF — malware analysis report

Static analysis result for SHA-256 02625a4aac9ee7bf…

MALICIOUS

PDF

277.9 KB Created: 2020-09-04 10:26:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 437db58a2f5f4b212446b8e21571ca04 SHA-1: edf59b7c8a47b43a76734cfb1b1a64c23eb0125c SHA-256: 02625a4aac9ee7bf8bf7e5c49b4d6876fee25e4a43b64ead290282d8ea49361e
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, appears to contain the same URL. This suggests the primary goal is to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9921

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=acute+ischemic+heart+disease+guideline
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/01d500_8b03d892de44495fb4065f357571f074.pdf
    • https://static.usrfiles.com/ugd/b8c837_df61845d59054d0abe04d449837c5a15.pdf
    • https://static.usrfiles.com/ugd/95089d_4bb76432c55c401b88f1278e0999da52.pdf
    • https://static.usrfiles.com/ugd/1849a1_e16a6f118f6f433691f4177643e1bf37.pdf
    • https://static.usrfiles.com/ugd/4bdc6d_a50122c57e0b4ae1bef8fe0ecef7ca0a.pdf
    • https://static.usrfiles.com/ugd/1c8c1e_a596072666cd4af09a80bfa0afcdf98c.pdf
    • https://static.usrfiles.com/ugd/1fa6dd_dfb47d32ea7c473b9d9f8c9702156b55.pdf
    • https://static.usrfiles.com/ugd/1fa6dd_d9ab1160746b4cb883625026c095da17.pdf
    • https://static.usrfiles.com/ugd/4c3ae3_86110b3230c54516858b0a7375eb5fb3.pdf
    • https://static.usrfiles.com/ugd/5bb01c_20f50b1713f546d4986253d7f6cb1d7d.pdf
    • https://static.usrfiles.com/ugd/1da05d_16c27ddaa2de4eec8ef5b09fd4ffbecd.pdf
    • https://static.usrfiles.com/ugd/1849a1_81c949bccf694b2887a5b146ce9a5660.pdf
    • https://static.usrfiles.com/ugd/0047a4_ff30e4fa35194f55a3a158ecec1ecb71.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/54392187877.pdf
    • https://cdn.shopify.com/s/files/1/0430/4302/9143/files/please_find_attached_my_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/multiple_enchantments_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0431/2308/1378/files/69004299289.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003dea2.bin
c23254dcd635fb104c040030d63912c190cd8932122b7e831dc81dd90bec13ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3DEA2 3748 bytes
font_01_sfnt_off0003ebdc.bin
d71b8d3b89221300fb69ee80dbd8797f6842af76278586f49a7a1ad28950ea5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3EBDC 5340 bytes
font_02_sfnt_off0003fdda.bin
6b466fc6199c9d2bf0a3c1baf6846816f69139f52c4767ed999e2332ac659b74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3FDDA 16088 bytes
font_03_sfnt_off0004305f.bin
aabbb95e4258a1bccfe6759090a0a8b97a33e8154131110566ffb2eaa8fdb080		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4305F 16148 bytes

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