Malicious PDF — malware analysis report

Static analysis result for SHA-256 97850a29bba1ca62…

MALICIOUS

PDF

47.2 KB Created: 2020-09-02 18:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9cc5aa2f2e05297582fd8a1ab8d2803 SHA-1: 35a19f4534b8ef427311cd8d50a4f90424ee9e44 SHA-256: 97850a29bba1ca629f9fa5884eae3d8e0c85a38eded95904b9bcd42eec642762
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body text. The document body itself contains text related to movie downloads, suggesting a lure. The PDF also contains a heuristic firing for a link farm, indicating a potential SEO poisoning or traffic generation scheme. The ML classifier strongly flagged this PDF as malicious.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.link/wix?keyword=jio+rockers+abhimanyudu+telugu+full+movie
    • https://static.usrfiles.com/ugd/b8c837_ff482b99a2044902bd9b5e8ca62e7d65.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab1ce2e910374072bfb857a175e262b6.pdf
    • https://static.usrfiles.com/ugd/7a11b0_550d234b43b8455bbd05b9cb3ba84cd1.pdf
    • https://static.usrfiles.com/ugd/418e76_a0be7dcc3168451c9d182db4ef6a96c7.pdf
    • https://static.usrfiles.com/ugd/b8c837_ccb8a125ba5a459f8f601b6bfbbbc0f4.pdf
    • https://static.usrfiles.com/ugd/b8c837_d3d2a1a2504d4d1ebb71b3d09e395610.pdf
    • https://static.usrfiles.com/ugd/d7ba0f_0f7597f760994dbbb9cee37de3106eda.pdf
    • https://static.usrfiles.com/ugd/9c66ff_be0b049e006c4f0f8afd1d109228e918.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5299/files/man_s_search_for_meaning_summary.pdf
    • https://cdn.shopify.com/s/files/1/0437/9089/3213/files/daxolipu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3751/4133/files/nusixexovewifogakufivito.pdf
    • https://cdn.shopify.com/s/files/1/0436/7283/0105/files/elmhurst_primary_school_newham_ofsted_report.pdf
    • https://cdn.shopify.com/s/files/1/0438/9624/2331/files/barukilisizoxikane.pdf
    • https://static.usrfiles.com/ugd/5fd5c1_100813a0e0d441b682aae711114edaa8.pdf
    • https://static.usrfiles.com/ugd/fdee49_5c05d2434e6144a0805ff2a71738df4a.pdf
    • https://static.usrfiles.com/ugd/ef7b09_e1d79e9dcd2a4cc994a43cdc52ae32d2.pdf
    • https://static.usrfiles.com/ugd/b8c837_7c8bc529c4e34f1496d0b4591b5addac.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_off0000602d.bin
a71758d84705ea15596992167c4359c53d59eb567bf33dff224a4ccea78b3953
pdf-font-stream PDF embedded font (sfnt) at offset 0x602D 5792 bytes
font_01_sfnt_off000073c9.bin
6b5865ac6a07b5c6d9507e8754c742c9fb801bb718fd3d785bbf1c11144318fd
pdf-font-stream PDF embedded font (sfnt) at offset 0x73C9 10076 bytes
font_02_sfnt_off0000966b.bin
efd143df76fb20d9a71b4e1813197d4bbdd83ee0f6dba6af07d33b9f02df55cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x966B 17192 bytes