Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a23d60a4245bbab…

MALICIOUS

PDF

66.6 KB Created: 2020-08-15 22:44:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46075e6e1530eb29a05894e8438717f6 SHA-1: 078070b60d804423738ca1eb5c2950d8d25c1297 SHA-256: 2a23d60a4245bbab21f31246df43e55be2fd61fcbc60764c23e50cb35ec0ca0d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a PDF link farm. One of these links points to a known malicious redirector, ttraff.ru. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary goal is to redirect the user to malicious infrastructure.

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=mo+creatures+horse+guide
    • http://files.takaikari.com/uploads/1/3/0/7/130739480/majakeros-safosiw-doxifi-bikiv.pdf
    • http://files.thesurreysaddlery.com/uploads/1/3/0/7/130775263/3579422.pdf
    • http://files.sunnystats.com/uploads/1/3/2/6/132682739/nuzawusuxojal-wuwupif.pdf
    • https://cdn.shopify.com/s/files/1/0431/2979/8807/files/candida_balanitis.pdf
    • https://cdn.shopify.com/s/files/1/0430/7664/9124/files/51064689801.pdf
    • https://cdn.shopify.com/s/files/1/0438/1966/3522/files/8651559004.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/79498631835.pdf
    • https://cdn.shopify.com/s/files/1/0435/2360/4631/files/tenukivupatugewexixev.pdf
    • https://cdn.shopify.com/s/files/1/0431/1475/8293/files/taviluxapepuvixinosufapo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3794/0117/files/sugufamisusonedagonuna.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/57422165104.pdf
    • https://cdn.shopify.com/s/files/1/0430/7366/7225/files/la_vie_en_rose_chords_ukulele.pdf
    • https://cdn.shopify.com/s/files/1/0430/9732/5732/files/rakikejojekax.pdf
    • https://cdn.shopify.com/s/files/1/0433/8984/5671/files/que_es_el_diagnostico_empresarial.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_off0000baf6.bin
e4c79808b99e1b3323475f6dea533f4a11d138fe7b170cd15d5e9236eb3889a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAF6 4948 bytes
font_01_sfnt_off0000cbdb.bin
2da3b5ad233b54da014e5798cfdfb3d5cc3527a7057dd22f92b7306e15d5869a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBDB 10264 bytes
font_02_sfnt_off0000eef8.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF8 4324 bytes

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