Malicious PDF — malware analysis report

Static analysis result for SHA-256 c63eeba054c45ba2…

MALICIOUS

PDF

52.4 KB Created: 2020-10-30 04:39:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d1bdfc207f2809aa5412342f5bb0732 SHA-1: 5d73c928bf09b61461e7c785ee25b1cd30db8fe2 SHA-256: c63eeba054c45ba25ada92f75c0f5619f98d0869f28117efd1ddab0c9139adae
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.me'. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing site or a download host.

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.me/123?keyword=mount+and+blade+warband+faction+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/ninazarila/life_and_death_twilight_reimagined_vk.pdf
    • https://s3.amazonaws.com/tetazino/35681815859.pdf
    • https://cdn.shopify.com/s/files/1/0502/0496/7084/files/10971313829.pdf
    • https://s3.amazonaws.com/tesodagiwor/14676072201.pdf
    • https://cdn.shopify.com/s/files/1/0486/0500/3934/files/lahore_board_matric_result_2020_gazette.pdf
    • https://s3.amazonaws.com/jofunozuzof/role_of_biomarkers_in_environmental_risk_assessment.pdf
    • https://s3.amazonaws.com/bededuxotulapil/66894652566.pdf
    • https://s3.amazonaws.com/gupuso/architectural_drawing_books.pdf
    • https://cdn.shopify.com/s/files/1/0502/1666/5281/files/vesewimofezakufiselevukot.pdf
    • https://cdn.shopify.com/s/files/1/0483/7716/8032/files/30109194222.pdf
    • https://uploads.strikinglycdn.com/files/e3f09bf6-9673-424a-92f3-260abf29e859/14301172246.pdf
    • https://uploads.strikinglycdn.com/files/4e7d9dc3-bb30-4e79-831c-c73f6bcb82a7/free_bunga_citra_lestari_memilih_dia.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008f39.bin
01bf7e0c9248d0861599218c6338453437e84da7e0b0c2f6c3cc9fb05d289289		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F39 5248 bytes
font_01_sfnt_off0000a13f.bin
17d638a3fb7525b9ddfe00c566a0461d38fcb506980e285800b3b837bda530e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA13F 10384 bytes

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