Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bfa104a46146a3c…

MALICIOUS

PDF

50.8 KB Created: 2020-08-07 17:16:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bad5ea5ad8887f8df583bebb25f70e1 SHA-1: 31a7f665abdba9fd8a026f5b02e1790dd31cc9b3 SHA-256: 9bfa104a46146a3c11562bd89c0b5762ff0a9cd804a58eb8507fee0d05aceac6
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 Shopify domains, suggesting a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious destination. The document body contains garbled text but includes the same redirector URL and a Shopify URL, reinforcing the malicious intent.

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/pify?keyword=beauty+and+the+beast+piano+sheet+music+pdf+easy
    • http://files.aninvisiblethreadnovel.com/uploads/1/3/2/6/132681863/tefurolim-pegovezoluvidig-gesiberek.pdf
    • http://files.jonb3d.com/uploads/1/3/0/7/130739945/kiniborelepomafitu.pdf
    • http://files.goldenartistsentertainment.com/uploads/1/3/0/7/130776120/5054569.pdf
    • http://files.legendarypg.com/uploads/1/3/2/3/132303035/gisosuzerem.pdf
    • https://cdn.shopify.com/s/files/1/0447/3788/8410/files/nios_assignment_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0441/3282/7288/files/18776083652.pdf
    • https://cdn.shopify.com/s/files/1/0432/7614/0710/files/fallout_3_best_weapons.pdf
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/suxukufes.pdf
    • https://cdn.shopify.com/s/files/1/0431/7144/6948/files/color_pencil_drawing_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0434/8349/6600/files/puminug.pdf
    • https://cdn.shopify.com/s/files/1/0434/6681/7689/files/32230841590.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/terasosekilosov.pdf
    • https://cdn.shopify.com/s/files/1/0429/1608/5923/files/78206473167.pdf
    • https://cdn.shopify.com/s/files/1/0428/4874/7676/files/nobob.pdf
    • https://cdn.shopify.com/s/files/1/0433/2391/6443/files/affairscloud_monthly_gk.pdf
    • https://cdn.shopify.com/s/files/1/0433/4993/4229/files/gojuxud.pdf
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/ditoruwa.pdf
    • https://cdn.shopify.com/s/files/1/0437/9354/7426/files/68603796802.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_off000073c1.bin
ed3f9ef7ab43e7bfd97a2c619a355f6d61ac74a9d35e19bba98b037be039a391
pdf-font-stream PDF embedded font (sfnt) at offset 0x73C1 5560 bytes
font_01_sfnt_off0000868e.bin
821aceb95440df5c2a9082b5735595bcc51a27eb449713a1976e884bb1626670
pdf-font-stream PDF embedded font (sfnt) at offset 0x868E 9860 bytes
font_02_sfnt_off0000a893.bin
b59afbb2f683942213df284fd86cd9422ada0c5f1ffac7698db8c94a40390bc4
pdf-font-stream PDF embedded font (sfnt) at offset 0xA893 16100 bytes