Malicious PDF — malware analysis report

Static analysis result for SHA-256 050c3003e3df055d…

MALICIOUS

PDF

261.3 KB Created: 2020-08-07 13:55:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b92c98afcfb375a2c51db71cc9a792a SHA-1: 966efcb889dfc202f29df994a78ce235f6d11079 SHA-256: 050c3003e3df055d6c5c978b738d327a7a10274d5af2c2a037daa4d9eb223618
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'ttraff.ru'. The ML classifier also flagged the document with high confidence. Although no scripts were extracted, the presence of a malicious URL strongly suggests an attempt to lure the user to a harmful site, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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.ru/pify?keyword=unstable+angina+guideline+pdf
    • http://files.bunkbedconcepts.com/uploads/1/3/0/8/130874257/tufok.pdf
    • http://files.jazzlegaspi.com/uploads/1/3/1/4/131406086/tisinetafolulaxas.pdf
    • http://files.atlinhistoricalsociety.com/uploads/1/3/2/7/132712080/tewolet-mujuga-jinefozedu-lakojati.pdf
    • http://files.odbtr.org/uploads/1/3/0/8/130813705/bb03faf2b.pdf
    • http://files.cardconnectnetwork.com/uploads/1/3/1/3/131380440/mugujup.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/7663/3247/files/bohr_rutherford_diagram_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/numumufamagonapefoxobu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/89090242917.pdf
    • https://cdn.shopify.com/s/files/1/0438/2405/4429/files/75121042664.pdf
    • https://cdn.shopify.com/s/files/1/0435/4349/4807/files/3082623575.pdf
    • https://cdn.shopify.com/s/files/1/0431/6259/9585/files/44918734542.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/31492922879.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/mutotimavux.pdf
    • https://cdn.shopify.com/s/files/1/0431/7623/1063/files/6298144268.pdf
    • https://cdn.shopify.com/s/files/1/0431/8714/2819/files/19707779345.pdf
    • https://cdn.shopify.com/s/files/1/0432/5074/5512/files/wheater_s_pathology_atlas.pdf
    • https://cdn.shopify.com/s/files/1/0429/5933/9674/files/jeloredusonizebikanojasof.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_off00039df2.bin
edcd41842031c507fdede8a50b584716618895b7c87b2d0deb1fd913fd364ed6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x39DF2 5016 bytes
font_01_sfnt_off0003af0d.bin
d69df98f62490253a1a60a9e874e704b6b3a826f6376044ba97b6a0b96849df5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3AF0D 15696 bytes
font_02_sfnt_off0003e086.bin
49436f94d5abf10ca6af8af9848174aab82dfe7bc58a5146411d238fd5c76648		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3E086 16148 bytes
font_03_sfnt_off0003f57c.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3F57C 4324 bytes

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