Malicious PDF — malware analysis report

Static analysis result for SHA-256 d398ab0ada8ae369…

MALICIOUS

PDF

53.0 KB Created: 2020-08-29 20:47:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b73485ab4af0e16196b9d4560b4b701 SHA-1: a37725710efae586b8f3b313ad1c05d6ca227c85 SHA-256: d398ab0ada8ae369ae17743343c9258dbb984f058aa56839da577ab8210c97d4
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 of which point to a link farm designed to manipulate search engine results. One of the primary links directs to a known malicious redirector, ttraff.ru, which is likely used to distribute further malware or phishing content. The document body itself contains the title 'Que es la comunicacion efectiva' and the malicious URL, suggesting a social engineering lure.

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/wix?keyword=que+es+la+comunicacion+efectiva
    • https://static.usrfiles.com/ugd/e4ff69_18d8328505564b608f8dec1af824a927.pdf
    • https://static.usrfiles.com/ugd/b8c837_56c0b4bed7f74b5cb74e8850294d410d.pdf
    • https://static.usrfiles.com/ugd/b8c837_c96237e87a974f5bb768d8462d8342b5.pdf
    • https://static.usrfiles.com/ugd/accd1f_ab40ceae2ce64434a1975f8edf6a5439.pdf
    • https://cdn.shopify.com/s/files/1/0433/0048/7332/files/30475757359.pdf
    • https://cdn.shopify.com/s/files/1/0431/7904/9121/files/bizedobebemotovumibu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8789/6480/files/wazifikezusuje.pdf
    • https://cdn.shopify.com/s/files/1/0439/0807/1576/files/lezijoziwidenotutakig.pdf
    • https://cdn.shopify.com/s/files/1/0434/3549/1490/files/rawamis.pdf
    • https://static.usrfiles.com/ugd/921909_0a06b3d962ca464489ba8d2e43edbf3d.pdf
    • https://static.usrfiles.com/ugd/b8c837_c5576bb4e82e473a9abac39e90c939a7.pdf
    • https://static.usrfiles.com/ugd/191a6d_1b6d2e150d81401a9826bce5eab2fd28.pdf
    • https://static.usrfiles.com/ugd/b910ae_147420dc534c479a86102f2920d09f46.pdf
    • https://cdn.shopify.com/s/files/1/0429/6274/7545/files/saber_que_vendras_letra.pdf
    • https://cdn.shopify.com/s/files/1/0433/5013/0846/files/19389388674.pdf
    • https://cdn.shopify.com/s/files/1/0437/5222/6974/files/gisoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/birar.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_off000076f7.bin
4bcac16e2937b09241926a8ba5c9c4a1d58ddc91c2b28d3078779a900ed87b5a
pdf-font-stream PDF embedded font (sfnt) at offset 0x76F7 5052 bytes
font_01_sfnt_off00008825.bin
4f19a4c9559c7df61a3199cef4d68802fa9c1dc58b99ed4f1e7419a105cbb391
pdf-font-stream PDF embedded font (sfnt) at offset 0x8825 10876 bytes
font_02_sfnt_off0000ab91.bin
7dc90556405f8547fb214dba9fc2c06a78707013e7bd0128d899df24e9cdf70f
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB91 17340 bytes