Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1a310d9921ea02b…

MALICIOUS

PDF

32.3 KB Created: 2020-08-21 11:27:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 486278c464895472fb04c0829288bdc5 SHA-1: d6dc6db93e1d2892e9d43943a1598110bcee36af SHA-256: d1a310d9921ea02b51c41ea288a43bfe10acded8424c65ef29889165ad4458f4
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as 'blank sheet of paper lyrics'. This indicates a phishing or malware distribution attempt. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, likely to manipulate search engine rankings or distribute further malicious content. 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.com/pify?keyword=blank+sheet+of+paper+lyrics
    • http://pufosu.frostbottomstudio.com/uploads/1/3/1/6/131606122/sotakefapiv_levifeme.pdf
    • http://files.gfox-insurance-agency.com/uploads/1/3/2/8/132815206/gojuwewajogenev_domuke_toveg_tipunen.pdf
    • http://files.kimberlyswritings.com/uploads/1/3/2/6/132681342/f685037e2b.pdf
    • https://cdn.shopify.com/s/files/1/0435/3441/8075/files/alberto_moravia_libri.pdf
    • https://cdn.shopify.com/s/files/1/0429/0979/4463/files/tuzajifelitisera.pdf
    • https://cdn.shopify.com/s/files/1/0439/8268/4318/files/clay_brick_making_machine_project_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/6094/4286/files/11407090390.pdf
    • https://cdn.shopify.com/s/files/1/0446/9443/8044/files/22196350074.pdf
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/gizasoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/adobe_air_android_8.pdf
    • https://cdn.shopify.com/s/files/1/0438/9486/6088/files/bajekiwulewinuzix.pdf
    • https://cdn.shopify.com/s/files/1/0438/2231/7730/files/pdf_agama_buddha.pdf
    • https://cdn.shopify.com/s/files/1/0432/0781/9422/files/69585538543.pdf
    • https://cdn.shopify.com/s/files/1/0440/7679/4021/files/robuxuladitinufo.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_off000044b3.bin
7f1f15ae1801520a03c416c40b7ba0028ec5eddaa49f69e41d35af78df26c475		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44B3 5320 bytes
font_01_sfnt_off000056c7.bin
b81fbb2701333d243cd0daa6990b8e88861b8b4993526a00ad06f361d9e3113f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56C7 8644 bytes

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