Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4c15d35a2e6cec8…

MALICIOUS

PDF

45.4 KB Created: 2020-08-19 07:42:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3af4b7559aa77df1a2bf2eebec112281 SHA-1: bd384417cb9df300bee7dbca0992a79479157509 SHA-256: d4c15d35a2e6cec881ac6c5fa2a777a2363caade2334a1bb6a30ecb4ff05e3df
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, many pointing to benign Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a link farm or redirection tactic to obscure the final malicious destination. The document body, though heavily obfuscated, contains the malicious URL and references to 'Stellaris defense platform bug', indicating a lure to entice users to click the link. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a phishing or redirection attack.

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=stellaris+defense+platform+bug
    • http://files.wanderingpassport.co/uploads/1/3/0/7/130775628/3114822.pdf
    • http://fizifes.orwt.org/uploads/1/3/1/1/131164250/luxudapifunizu.pdf
    • http://files.corbyharrislab.com/uploads/1/3/1/4/131406258/988503.pdf
    • http://zodapevi.westportscenictours.com/uploads/1/3/0/7/130738971/godirew_jusebugiluf_lepusefesu.pdf
    • http://files.tessaabigailphotography.com/uploads/1/3/1/6/131606231/7a4505ff3a70f29.pdf
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/pokuwe.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/bladedance_of_elementalers_light_novel.pdf
    • https://cdn.shopify.com/s/files/1/0429/5124/5987/files/69448447789.pdf
    • https://cdn.shopify.com/s/files/1/0431/0905/6666/files/72858486939.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/mojubowegixuzakazinixuro.pdf
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/32064605474.pdf
    • https://cdn.shopify.com/s/files/1/0431/3687/6706/files/manukulumova.pdf
    • https://cdn.shopify.com/s/files/1/0431/8609/4229/files/53317252695.pdf
    • https://cdn.shopify.com/s/files/1/0437/5884/6109/files/38912601550.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1346/files/73251279254.pdf
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/17860095397.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_off0000704d.bin
67ca24f5d37ee66fc7e9937f480cd72a0a03e798a517040a0792edab47560698		 pdf-font-stream PDF embedded font (sfnt) at offset 0x704D 5604 bytes
font_01_sfnt_off00008337.bin
dc7461def643e7d7e172bc2b0d4c608f6900229a5171da22369e617273dbaa53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8337 10936 bytes

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