Malicious PDF — malware analysis report

Static analysis result for SHA-256 a86edf1de67f8ce8…

MALICIOUS

PDF

36.4 KB Created: 2020-08-22 18:12:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b4d8edfb1dbfd710f370a273dd9690b SHA-1: 77cd93aacf56414d639e6719823363663005b3c4 SHA-256: a86edf1de67f8ce83d7409c795b6ed5e12e45a469eefeeb2529cbd4a662956b5
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.ru/pify?keyword=lagu+cinta+luar+biasa+dj+andmesh'. This URL is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, contains the same URL and references to song titles, suggesting a lure. 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.ru/pify?keyword=lagu+cinta+luar+biasa+dj+andmesh
    • http://files.leppekpottery.com/uploads/1/3/1/8/131857717/5546471.pdf
    • http://files.screenvortex.com/uploads/1/3/0/8/130874612/3973525.pdf
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/95054153490.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4311/files/resistencia_a_antimicrobianos_veterinaria.pdf
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/reading_comprehension_kindergarten_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/1463/5171/files/c_s_a_ka_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/2103/1832/files/mavebuken.pdf
    • https://cdn.shopify.com/s/files/1/0432/9819/3573/files/analog_and_digital_modulation.pdf
    • https://cdn.shopify.com/s/files/1/0428/2934/9030/files/bazaar_full_movie_300mb.pdf
    • https://cdn.shopify.com/s/files/1/0429/4747/7667/files/vizuburujuwuvofujupari.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gujogu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6874/4099/files/pasalunodunesegikor.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/56473724556.pdf
    • https://cdn.shopify.com/s/files/1/0433/1402/0505/files/99970622665.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_off000050e3.bin
06ece8ed8c804c5d981c335ca289954f1ef6a1e4ea374c217535fcee63c7ed3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50E3 5508 bytes
font_01_sfnt_off0000636a.bin
4a96c11bcc1e9e63334f3197df9b5ef5b1b57a8578d510a12acbac24e10673e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x636A 9792 bytes

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