Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea45a6bbdb1b4397…

MALICIOUS

PDF

46.3 KB Created: 2020-10-30 23:49:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0938910bfde1b784764c706ef34de5a2 SHA-1: 79f6ffcc35b772f465ec4a5d6332710cfcbe22b8 SHA-256: ea45a6bbdb1b4397875d1df1ec1e03414e04d4a7779b0862247ff62f3a450d05
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 'https://gettraff.ru/123?keyword=golden+garden+spider+orb+weaver'. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the redirector suggest an attempt to lure the user to a malicious site, likely for phishing or to download further malware.

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://gettraff.ru/123?keyword=golden+garden+spider+orb+weaver
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/xefafimofaxeparekuji.pdf
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/9042127.pdf
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/xejoxizuzife-xukot-ligoburoliduses.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/4035138a-ea52-4976-b2a6-47b6fb3761fa/gales.pdf
    • https://s3.amazonaws.com/rubidokezive/6200990698.pdf
    • https://s3.amazonaws.com/xojafemori/code_vein_trading_points_guide.pdf
    • https://s3.amazonaws.com/kakekojezutok/26467117920.pdf
    • https://s3.amazonaws.com/nowokil/rijone.pdf
    • https://s3.amazonaws.com/fofeguj/cdpo_question_paper_2016.pdf
    • https://s3.amazonaws.com/nowonovege/pathfinder_shadow_dancer_guide.pdf
    • https://s3.amazonaws.com/jumedemimo/31633563349.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068c6.bin
44694ea2696fdc1adff9ef7c578cdb51c9acf65fe77b8418c49385deccb67e93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68C6 5156 bytes
font_01_sfnt_off00007a67.bin
ed914f3cd18a71f7bc1bbf9ed4749272a45067bf1189c12ea3dbaf3296ed05bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A67 10572 bytes
font_02_sfnt_off00009e5b.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E5B 4324 bytes

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