Malicious PDF — malware analysis report

Static analysis result for SHA-256 e81b66dd3a969aa2…

MALICIOUS

PDF

56.2 KB Created: 2020-08-08 09:00:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7417019cc1911fbb55efcb245c033052 SHA-1: 2df0444f90e4ab5c25a9b4ec4fab4d8112112db9 SHA-256: e81b66dd3a969aa25d6ca6b4a699e9ad0b299ff3af923d1c8b97a0547f2266e5
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. The document body, though partially corrupted, contains the target URL, reinforcing the malicious intent. No scripts were extracted, limiting the analysis to the PDF structure and embedded URLs.

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.ru/pify?keyword=al+mughni+ibn+qudamah+pdf+urdu
    • http://files.gem-uk-properties.com/uploads/1/3/1/4/131453902/jarobefizojovit_zogibemakemix_jatutaxoka_fijonanax.pdf
    • http://files.lamarvetclinic.com/uploads/1/3/2/6/132681632/9962216.pdf
    • http://dopud.springfieldmabouncehouserentals.com/uploads/1/3/1/4/131483281/5074170.pdf
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/bakuliwowekoxiwitepuluwe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89647405972.pdf
    • https://cdn.shopify.com/s/files/1/0428/5700/5222/files/93659491738.pdf
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/guitar_rig_5_pro.pdf
    • https://cdn.shopify.com/s/files/1/0438/7300/9819/files/67387514475.pdf
    • https://cdn.shopify.com/s/files/1/0429/2644/0607/files/didagikegiga.pdf
    • https://cdn.shopify.com/s/files/1/0435/6974/1983/files/solubilities_of_inorganic_and_organic_compounds_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0433/9181/1734/files/92400754750.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1287/files/96361968595.pdf
    • https://cdn.shopify.com/s/files/1/0430/2379/4337/files/caligrama_ejemplos.pdf
    • https://cdn.shopify.com/s/files/1/0432/1073/5780/files/getowezemonowup.pdf
    • https://cdn.shopify.com/s/files/1/0434/7589/4422/files/roxanafopizizexoganafip.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/rivixe.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
stream_005_off0000ac9c.bin
a7801f3c68861904479a7c3d0c04d78f83a233e699d70f4952381e010d356a5b
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xAC9C 22544 bytes
font_00_sfnt_off00007669.bin
b97aae3b9d7ad5ce96dc7fa7aa8eb7a4ad930d018d16efb373112f6f2e3e7fbb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7669 5532 bytes
font_01_sfnt_off000088fc.bin
e6304ce0fa621ad2f9e7a68429ee7b1d6117f2b1d155f0eea021fd314a0cce1c
pdf-font-stream PDF embedded font (sfnt) at offset 0x88FC 10368 bytes