Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2dfb345ee7bd7be…

MALICIOUS

PDF

34.0 KB Created: 2020-08-29 16:08:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fd74fdd72681c0c54d32c2823212940 SHA-1: 8347a718a095324ebc0d7942e05eb8f22f122312 SHA-256: b2dfb345ee7bd7be9ac4564c8def6c98218557023cb7c85a107ec569d9bf703d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=choose+yourself+james+altucher+audiobook'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on shopify.com. The document body, though heavily corrupted, contains the same redirector URL, suggesting the primary intent is to drive users to this malicious site. No scripts were extracted from this sample.

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.cc/wix?keyword=choose+yourself+james+altucher+audiobook
    • https://cdn.shopify.com/s/files/1/0433/4636/2527/files/zamixukomifusu.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/60139659432.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/72751253214.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/supervisor_behavioral_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/5312/9640/files/6542112670.pdf
    • https://cdn.shopify.com/s/files/1/0437/7303/4654/files/vuluraruvufojoxorutifaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/9157/4430/files/sixewubupobufetarisif.pdf
    • https://cdn.shopify.com/s/files/1/0429/2037/8524/files/wafudun.pdf
    • https://cdn.shopify.com/s/files/1/0431/9608/8481/files/wetojiviwunoxulasemazan.pdf
    • https://static.usrfiles.com/ugd/b8c837_ee299560ee4442fbb99473f9bbd577f1.pdf
    • https://static.usrfiles.com/ugd/b8c837_03cd2da1f9fc42399650b944f5b7e15d.pdf
    • https://static.usrfiles.com/ugd/b8c837_5167236228294d039f4ea0ef1e968dc0.pdf
    • https://static.usrfiles.com/ugd/22739b_6ef5b62958c44286b5c47c90dad32285.pdf
    • https://static.usrfiles.com/ugd/1f2646_be68a953a0b24fc485ed1382e737da06.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_off000045ce.bin
35274f0faae2aeef1969cd8b8d9f556a4014f0e5bebd5fba77c1ff15b6db2a3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45CE 5548 bytes
font_01_sfnt_off00005897.bin
8412e8307c9993ce192fc981f22c470150081f84a71b9e9fcf431eb4ba98c355		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5897 10084 bytes

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