Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fe434b637eaff00…

MALICIOUS

PDF

38.7 KB Created: 2020-09-02 11:06:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 860f9d9abd134e3e8c9a1400926fe335 SHA-1: 45d23afd4d67aa75c033626a38d34e3ea34bda7f SHA-256: 7fe434b637eaff00fbd10838e92887e225a17074d86f5ad590b88a61639b25f1
152 Risk Score

Malware Insights

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

The PDF contains a link to `https://ttraff.com/wix?keyword=anand+shinde+lal+divyachya+gadila+song`, which is flagged as malicious redirector infrastructure. The document also contains a large number of links to other PDFs, suggesting a link farm or SEO poisoning attempt. The ML classifier strongly indicates maliciousness. The presence of embedded JavaScript, though not directly executed by the PDF viewer, suggests potential for further malicious actions if the user interacts with the document in unexpected ways or if the PDF is part of a larger exploit chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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/wix?keyword=anand+shinde+lal+divyachya+gadila+song
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/80bfa9_689c1e1f7bf84f3ab373a47342eb3735.pdf
    • https://static.usrfiles.com/ugd/fb83f1_8a75b433098e4693a5e03186325f6cff.pdf
    • https://static.usrfiles.com/ugd/7ff653_522e1d8f2f1c4d268faaafd525589496.pdf
    • https://static.usrfiles.com/ugd/b56239_7afcc6395bf3459b9c99f98abcf3e45a.pdf
    • https://cdn.shopify.com/s/files/1/0433/7909/7758/files/39785970102.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/lean_accounting_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/wesikenimobiga.pdf
    • https://cdn.shopify.com/s/files/1/0434/1874/7036/files/tomevuxeto.pdf
    • https://cdn.shopify.com/s/files/1/0429/1896/9511/files/beyond_diet_9_day_cleanse.pdf
    • https://cdn.shopify.com/s/files/1/0433/5396/4712/files/chi_chi_london_tall_size_guide.pdf
    • https://cdn.shopify.com/s/files/1/0462/1539/7530/files/83960893180.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5236/files/55273102354.pdf
    • https://cdn.shopify.com/s/files/1/0432/7204/4697/files/25156402263.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5460/files/75580589376.pdf
    • https://cdn.shopify.com/s/files/1/0435/5109/6993/files/74908820277.pdf
    • https://cdn.shopify.com/s/files/1/0431/4693/6482/files/72339043336.pdf
    • https://cdn.shopify.com/s/files/1/0455/7284/9829/files/41886568909.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c2d.bin
7682a4b09e67f20c9b9893c514ccb4aa72bdd48c933d6f4de5fe21411feb1acf
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2D 5256 bytes
font_01_sfnt_off00006e1e.bin
bad33e30f5ddb9228e281062e04fad0d7213c8bea7913f86b693f47e0778e925
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1E 12408 bytes