Malicious PDF — malware analysis report

Static analysis result for SHA-256 499c6c7f9e061de9…

MALICIOUS

PDF

57.4 KB Created: 2020-08-20 19:11:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5f243a8ceaded8239cea3730757a973 SHA-1: 3a641da7ee9efe9c8f0fd4387dc678b2544d2bb6 SHA-256: 499c6c7f9e061de9cb2cec1b25149170da6c2275b11c3903a7347cb2df744944
130 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at ttraff.com. The document body also contains a call-to-action phrase, suggesting a lure to trick the user into clicking the malicious link. The primary malicious IOC is the redirector URL.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=angry+boy+status+video
    • http://files.4izon.com/uploads/1/3/1/4/131407818/folatesomuju.pdf
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/jobijusapefos.pdf
    • https://cdn.shopify.com/s/files/1/0440/7033/8725/files/62467060196.pdf
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/87135316304.pdf
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/pisomimejezobonizifufa.pdf
    • https://cdn.shopify.com/s/files/1/0430/6183/7981/files/xigagas.pdf
    • https://cdn.shopify.com/s/files/1/0431/8350/5570/files/pastest_mrcp_part_2_2017.pdf
    • https://cdn.shopify.com/s/files/1/0434/8539/7152/files/nopurobumovefagoridirefim.pdf
    • https://cdn.shopify.com/s/files/1/0434/7373/1741/files/nigiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/8801/1673/files/revixixoxugonide.pdf
    • https://cdn.shopify.com/s/files/1/0431/7157/8007/files/meselasaburedatenunorazeb.pdf
    • https://cdn.shopify.com/s/files/1/0438/7710/5832/files/goxefujuno.pdf
    • https://cdn.shopify.com/s/files/1/0432/7574/7491/files/87951024738.pdf
    • https://cdn.shopify.com/s/files/1/0436/9301/5190/files/dedogoneguwogegex.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/19102463031.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006481.bin
bdeee27b6f3fdebd23c80054e871120672e89c494bfae03318cdcbf718eb61ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6481 6872 bytes
font_01_sfnt_off000075d8.bin
19b8df3e36959bf4828058bf4ca48587dee5fb5636d2ab17c6883d2f0a75e1c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D8 5252 bytes
font_02_sfnt_off000087b9.bin
b11253d531039456c7cf5b2ecac89851fb2fc7e21327afb1bfe9d2af666b1d68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87B9 4432 bytes
font_03_sfnt_off000098c8.bin
673798f6e6903b40463145644b7f74c770263c2a24cf72643cfc7004832396de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98C8 10416 bytes
font_04_sfnt_off0000bc8a.bin
bdfd33eb44fb69ce649c75bc0c26d38b36381dd482d4b026ebc0fc13e25e367c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC8A 18624 bytes

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