Malicious PDF — malware analysis report

Static analysis result for SHA-256 d25e8116d3901d19…

MALICIOUS

PDF

42.6 KB Created: 2020-08-24 05:28:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1b9c0b6a488b4e5852ff1f420362481 SHA-1: a451b26694f145f250648e9a243065f4162f0071 SHA-256: d25e8116d3901d19829e75bafdd2e5d2b25ffdcd09af41a3488d96d42865270f
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm, likely to improve search engine ranking for malicious content. The ML classifier also strongly flagged this PDF as malicious. The primary malicious IOC is the redirector URL, which is likely used to host or deliver further malicious content.

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.cc/pify?keyword=better+memory+now+pdf
    • http://files.eppicot.com/uploads/1/3/0/7/130775698/sesoxop.pdf
    • http://ravup.highgradeglobal.com/uploads/1/3/0/8/130874493/nonixivep.pdf
    • https://cdn.shopify.com/s/files/1/0429/3502/5830/files/cetoconazol_bula.pdf
    • https://cdn.shopify.com/s/files/1/0435/8687/9647/files/62020052463.pdf
    • https://cdn.shopify.com/s/files/1/0435/1898/4352/files/deepika_malayalam_calendar_2020_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/behavioural_science_in_medicine.pdf
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/21855526772.pdf
    • https://cdn.shopify.com/s/files/1/0432/2626/7816/files/adobe_illustrator_cs6_free_google_drive.pdf
    • https://cdn.shopify.com/s/files/1/0428/7938/5766/files/present_perfect_already_and_yet_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0440/7289/4629/files/5910660234.pdf
    • https://cdn.shopify.com/s/files/1/0437/9249/8850/files/suwagobubigimixetabugi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5765/1613/files/37198733559.pdf
    • https://cdn.shopify.com/s/files/1/0433/9440/0414/files/apologetics_101.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a3e.bin
66e95501377c57a0684ac63bdfdc878c8c922e52a49f1544f168fa255e10ed05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3E 5008 bytes
font_01_sfnt_off00007b52.bin
51e73eddd9f0e65ad79b5bca892a395e7508dba66fcab7121bf2c82dff4a9313		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B52 10136 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.