Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5f20e567fffe951…

MALICIOUS

PDF

38.1 KB Created: 2020-08-26 08:57:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 497e492016b926e797f23aff3aa74879 SHA-1: 5c1b45124c70085f5c3a320161e584a57accfa66 SHA-256: f5f20e567fffe951959a99d53673d06aaa0086db7fa98fccfbaca7feb7a4788e
120 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous embedded URLs, including a primary redirector at 'https://ttraff.ru/pify?keyword=american+sign+language+dictionary+third+edition+pdf'. This indicates a social engineering attempt to lure users to malicious infrastructure. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. No scripts were extracted, limiting the analysis of further stages.

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=american+sign+language+dictionary+third+edition+pdf
    • http://nevalotef.wellness.org.sg/uploads/1/3/1/3/131384260/4591653.pdf
    • http://wufejexu.konsultservices.com/uploads/1/3/1/3/131380005/pugiwemarukaginupev.pdf
    • http://files.mammysplace.ca/uploads/1/3/1/3/131383318/jilumedirekof_xifoz_nanujusus.pdf
    • http://files.mcswa-wv.com/uploads/1/3/1/3/131398406/8289148.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/kutimepivuluwevejolodi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2748/8168/files/bedutazuwame.pdf
    • https://cdn.shopify.com/s/files/1/0433/3400/8987/files/catecismo_de_la_iglesia_catolica_vaticano.pdf
    • https://cdn.shopify.com/s/files/1/0430/9798/1082/files/xofixezetukig.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0835/files/14302816524.pdf
    • https://cdn.shopify.com/s/files/1/0435/1049/7434/files/49200804640.pdf
    • https://cdn.shopify.com/s/files/1/0433/6291/0376/files/beginners_guide_to_chakra_meditation.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51851907441.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/3796431094.pdf
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/pubosifozi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2630/8510/files/getebepijerowa.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_off00004835.bin
5ba992db2f126a188bae986280b988e608c125784827f3bd0d29302eb7aa1b55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4835 5540 bytes
font_01_sfnt_off00005ad6.bin
05fd1d54e43273f74bb593c90d3c5a287613b7b423f958d8d259f5454946cf6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD6 9964 bytes
font_02_sfnt_off00007cec.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEC 4324 bytes

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