Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc7bbdc618624ffd…

MALICIOUS

PDF

42.3 KB Created: 2020-08-30 13:43:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d237b304c96fe2c3de9f8791eb85449 SHA-1: b6a7553f8f4825712d07840557f7e37cf335614b SHA-256: fc7bbdc618624ffd080f0af38a72e4096a6a2c27876b8f644a1e76a3539f54ce
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a redirector link to 'ttraff.cc', which is known malicious infrastructure. The document body, though heavily obfuscated, also contains the URL 'https://ttraff.cc/wix?keyword=2008+ford+focus+manual+transmission+fluid+type', suggesting a lure to a malicious site disguised as information. 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.cc/wix?keyword=2008+ford+focus+manual+transmission+fluid+type
    • https://cdn.shopify.com/s/files/1/0431/5322/7932/files/friendship_day_pictures_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/5778/9605/files/visut.pdf
    • https://cdn.shopify.com/s/files/1/0431/0066/8065/files/werewolf_transformation_scene.pdf
    • https://cdn.shopify.com/s/files/1/0433/6808/7701/files/cancer_de_mama_gpc.pdf
    • https://cdn.shopify.com/s/files/1/0435/9307/2808/files/gujakabusukuma.pdf
    • https://cdn.shopify.com/s/files/1/0428/1666/7814/files/adobe_photoshop_kickass_download.pdf
    • https://cdn.shopify.com/s/files/1/0450/0904/3606/files/happy_birthday_bunting_printable.pdf
    • https://cdn.shopify.com/s/files/1/0430/2218/8701/files/60336533829.pdf
    • https://cdn.shopify.com/s/files/1/0435/8501/1871/files/lepatupotevemapo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7440/5023/files/5015551823.pdf
    • https://static.usrfiles.com/ugd/d7ba0f_2ac1947f44e54fc98045659983fa3d68.pdf
    • https://static.usrfiles.com/ugd/7dd30d_27c55800e60b4b2d811b9a722d17622c.pdf
    • https://static.usrfiles.com/ugd/8d57bd_52d53f9f7ad7403aa100e7b6eb4e3888.pdf
    • https://static.usrfiles.com/ugd/b8c837_c0085b0b4c98493a9fcb766f61ee8632.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_off000065f8.bin
dc845dffc3bc7b828daf75f8054300364a9ab5de95f6b9d95f79c8d2d1a0db46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65F8 5776 bytes
font_01_sfnt_off00007986.bin
f9de34e22e82d64aa7add7724c375883af0f60a5473c6716208490235ac46248		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7986 10132 bytes

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