Malicious PDF — malware analysis report

Static analysis result for SHA-256 206bdb04f476a0e7…

MALICIOUS

PDF

40.7 KB Created: 2020-09-02 06:26:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a45ee201f5947d542e30460fa6aa8fd SHA-1: f609b7039743f08b9798fa85faca5ccf231d46cf SHA-256: 206bdb04f476a0e7cf5e0f6cc9b27c50093c2f5f266dea6e0bee3096d98ebbe2
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.ru/wix?keyword=set+top+box+android+app', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of a link farm and a malicious redirector indicates an attempt to lure users to malicious sites, likely for phishing or malware delivery.

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=set+top+box+android+app
    • https://static.usrfiles.com/ugd/db93e9_5bbe9e3f4e3d4effb1d3f191ddfd8b22.pdf
    • https://static.usrfiles.com/ugd/3835dd_ecf8a9f78d264869956e4042a07eda54.pdf
    • https://static.usrfiles.com/ugd/78c764_4a6c848f48c44078bce794e8897fbf14.pdf
    • https://cdn.shopify.com/s/files/1/0430/7098/0245/files/76707810827.pdf
    • https://cdn.shopify.com/s/files/1/0432/3033/1047/files/71461018877.pdf
    • https://cdn.shopify.com/s/files/1/0446/3896/1827/files/jutujidemuposowizaniki.pdf
    • https://cdn.shopify.com/s/files/1/0434/0541/0471/files/aggregate_demand_function.pdf
    • https://static.usrfiles.com/ugd/9c0842_245427d8452e4e7f9ea6cbe66357990a.pdf
    • https://static.usrfiles.com/ugd/4b68be_d5d9e48a93804eafb73212330f2eab5c.pdf
    • https://static.usrfiles.com/ugd/b4a829_5746f673a1784fbc9cfd348d805caa36.pdf
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/66893680529.pdf
    • https://cdn.shopify.com/s/files/1/0437/8846/8385/files/situlirobexunizezibixufa.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_off0000614a.bin
4bc76638f507f7388ee014977bdf3467aee0f3d2aa597ac798b34f488da5b536		 pdf-font-stream PDF embedded font (sfnt) at offset 0x614A 5056 bytes
font_01_sfnt_off00007284.bin
bc35679a1185982955636abf88da9725ff39faf6f4d48a07223faefe435d2364		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7284 10488 bytes

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