Malicious PDF — malware analysis report

Static analysis result for SHA-256 bebd5ad5b42e3d20…

MALICIOUS

PDF

33.9 KB Created: 2020-08-21 06:37:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fec72721ce2430f9af4f6e59e69d13b SHA-1: fd83a77df7b95081f32ed272524b2f0bd701af5b SHA-256: bebd5ad5b42e3d203db5bfa4deb42fe45f4feefdb9d4689cafbaf2ef335d49b1
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a specific malicious redirector URL, indicating a phishing or redirection attempt. The document body, though heavily obfuscated, contains the text 'Ariston velis evo plus 100 manual' and the malicious URL, suggesting a lure to disguise the malicious intent. The primary malicious IOC is the redirector URL which points to known malicious infrastructure.

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=ariston+velis+evo+plus+100+manual
    • http://kitanuj.suyana.net/uploads/1/3/1/3/131383483/2308f97.pdf
    • https://cdn.shopify.com/s/files/1/0436/0273/9362/files/35626727728.pdf
    • https://cdn.shopify.com/s/files/1/0437/8787/8549/files/flawed_book_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/6128/7839/files/29596022172.pdf
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/vedugotujovadafime.pdf
    • https://cdn.shopify.com/s/files/1/0438/7618/8315/files/javascript_zero_pad.pdf
    • https://cdn.shopify.com/s/files/1/0438/2585/6662/files/35772797656.pdf
    • https://cdn.shopify.com/s/files/1/0432/7761/5262/files/tofokajafoxulesimepu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6689/2191/files/xidopilej.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/kozesegegolizazu.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_off000046fe.bin
57825c03e32724de5259c579eaad1b38e6ab0e002d1ae659f22eb11d37f1e581		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46FE 5208 bytes
font_01_sfnt_off000058a7.bin
68af699dfe4212dd327de16a1f179bf1fce503cdd9deeda01b0621ae9e360500		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58A7 10104 bytes

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