Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5311e10529e255d…

MALICIOUS

PDF

54.2 KB Created: 2020-08-10 17:10:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bbc9e2f8ed0d791cc835f060b50bf518 SHA-1: de36877d37dc105a7a388285e2f1b96937fb724e SHA-256: d5311e10529e255d0fdf2832c41f1c16fde1d176533f16f89f3053e74540757d
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious content, specifically identified by the 'ttraff.cc' redirector. The document body, though heavily obfuscated, contains references to 'Akira manga pdf español' and the malicious URL, suggesting a lure to potentially malicious content. The presence of numerous external links, many hosted on Shopify, further supports the link farm attack pattern. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=akira+manga+pdf+espa%25C3%25B1ol
    • http://wojas.wellingtonartgallery.com/uploads/1/3/1/3/131383483/toner.pdf
    • http://files.adamhager.com/uploads/1/3/1/4/131406036/550c34.pdf
    • http://files.somonaukwrestlersclub.com/uploads/1/3/1/3/131378993/189330.pdf
    • https://cdn.shopify.com/s/files/1/0431/9205/8005/files/mentors_iba_mba_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/6259/9584/files/bitebifotuvugi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/53808194407.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/11565881452.pdf
    • https://cdn.shopify.com/s/files/1/0437/3689/1544/files/muvumufexilose.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/koguperoganakedirozagodeg.pdf
    • https://cdn.shopify.com/s/files/1/0434/6871/8233/files/vodegudun.pdf
    • https://cdn.shopify.com/s/files/1/0439/0679/3627/files/vukexogajeliged.pdf
    • https://cdn.shopify.com/s/files/1/0431/4077/6093/files/57397777379.pdf
    • https://cdn.shopify.com/s/files/1/0440/2210/4222/files/70671256929.pdf
    • https://cdn.shopify.com/s/files/1/0433/9276/2017/files/71740182046.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_off0000783b.bin
77d991f6d66f0abd816c48c5383f23a371d6d401c93dd3fc1e9ab1fba9aab380		 pdf-font-stream PDF embedded font (sfnt) at offset 0x783B 8456 bytes
font_01_sfnt_off0000947b.bin
505295b522de9c22563737b31a17d5b3ce0364dc49103bf66e5776cea06d47a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x947B 5624 bytes
font_02_sfnt_off0000a73f.bin
eb1657b557760d1f1deb70978ecff0b7cf1894fe19b70d60891b9c0034c416e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA73F 10284 bytes

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