Malicious PDF — malware analysis report

Static analysis result for SHA-256 7adb8aef628984bf…

MALICIOUS

PDF

50.1 KB Created: 2020-08-19 07:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd83e39000bb78e1cabd7ba54cebd0ab SHA-1: aea7a58c393c2d24affd1386dda027e227a27a15 SHA-256: 7adb8aef628984bf7fff3171c52bd0488bd78fa018a3f3ce61436ccfabf76782
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.com/pify?keyword=bollywood+songs+2019++bestwap', which is flagged as malicious. Additionally, the PDF is identified as a link farm, suggesting an attempt to manipulate search engine results or direct users to potentially harmful content. No scripts were extracted, and the primary malicious activity appears to be link-based redirection.

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.com/pify?keyword=bollywood+songs+2019++bestwap
    • http://files.affiliatedtattoofamily.com/uploads/1/3/0/8/130814921/962443.pdf
    • http://dinul.sdsuaoe.com/uploads/1/3/1/0/131069934/wozizufajibez.pdf
    • http://files.jorgemendozas.com/uploads/1/3/2/7/132712129/c7d907.pdf
    • http://files.royalreadsandreviews.com/uploads/1/3/2/6/132695258/5761173.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/balagtasan_halimbawa.pdf
    • https://cdn.shopify.com/s/files/1/0433/6697/3589/files/12557406510.pdf
    • https://cdn.shopify.com/s/files/1/0429/1713/4502/files/forubemiwigofojepenowura.pdf
    • https://cdn.shopify.com/s/files/1/0437/6562/9082/files/the_walking_dead_comic_online.pdf
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/66348772358.pdf
    • https://cdn.shopify.com/s/files/1/0452/3904/2205/files/4_10_by_10_coordinate_grid_paper_in.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/14253896954.pdf
    • https://cdn.shopify.com/s/files/1/0431/8137/5648/files/jopok.pdf
    • https://cdn.shopify.com/s/files/1/0431/2409/7191/files/sidekiq_clear_queue.pdf
    • https://cdn.shopify.com/s/files/1/0435/5771/6127/files/79438228702.pdf
    • https://cdn.shopify.com/s/files/1/0429/6327/1833/files/rojezalewamavisab.pdf
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/fonabotilitejewoju.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_off0000780a.bin
354d24c2e8aa9119b306ad4c54a892ee8910d0050b5a119104f9a7274b57a593
pdf-font-stream PDF embedded font (sfnt) at offset 0x780A 5896 bytes
font_01_sfnt_off00008c41.bin
f685f692456f0d8d83c208ca83f773729f0508b969ba257bb3bd117adda8efe5
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C41 15260 bytes