Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa5fecb0615f8eeb…

MALICIOUS

PDF

52.1 KB Created: 2020-08-15 01:43:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ca68079fd553cac23e928712698ee19 SHA-1: 0bb3e32bc2fab40b53e82bb0adbc403553c8a62c SHA-256: fa5fecb0615f8eeb683be3105cad9d581dc60f69297bf8d1749c1ff076a69a32
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One prominent URL, 'https://ttraff.ru/pify?keyword=adobe+illustrator+cs6++size', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and references to software downloads, suggesting a lure to redirect users to malicious infrastructure. 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=adobe+illustrator+cs6++size
    • http://files.catholicchurchofantioch.eu/uploads/1/3/1/6/131606069/gumurimok_sujadudowaxeso_rixorira.pdf
    • http://genavuw.kitchengadgetvegan.com/uploads/1/3/1/0/131070109/labek.pdf
    • http://files.mouthofasouthernrealtor.com/uploads/1/3/1/4/131414516/musegativuxor.pdf
    • http://files.americancampexperience.com/uploads/1/3/1/3/131381151/wonokimuga.pdf
    • https://cdn.shopify.com/s/files/1/0434/6390/1334/files/vekelazovokil.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8330/files/40960833231.pdf
    • https://cdn.shopify.com/s/files/1/0434/3300/1126/files/steven_universe_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0431/2668/5850/files/56183990552.pdf
    • https://cdn.shopify.com/s/files/1/0435/7524/7003/files/obsidian_prison_ip.pdf
    • https://cdn.shopify.com/s/files/1/0437/5543/8241/files/moxinuwopipomuzu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5425/1670/files/8216218568.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gamusuzojikifikukudubug.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19463184481.pdf
    • https://cdn.shopify.com/s/files/1/0436/5543/0302/files/dilenexiwozurozaneb.pdf
    • https://cdn.shopify.com/s/files/1/0429/1212/0998/files/gemivigezagenemizem.pdf
    • https://cdn.shopify.com/s/files/1/0435/3989/0327/files/12339618215.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_off00008d94.bin
be4b1beeaa53c3f1775f9faf950a2fc75a088a9224a66c1ed2fea3e926872ecf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D94 5264 bytes
font_01_sfnt_off00009f85.bin
f9eba3cbf4a00afbc7c2fd6a0593b2d87005d0b5ca20653905d1393e6c534883		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F85 10444 bytes

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