Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba30ec0d7e78b30c…

MALICIOUS

PDF

51.2 KB Created: 2020-08-13 00:48:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad632c6b843333a9a6f615fc488a8a97 SHA-1: b7ad0d651e333a6f1961823dae91b3bb89ac176c SHA-256: ba30ec0d7e78b30c78ae77c4daf2c34e08cd7a69a9184d39b0507aa945d973b8
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=redistribution+agreement+pdf`. It also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily corrupted, contains fragments that appear to be the URL `https://ttraff.cc/pify?keyword=redistribution+agreement+pdf`, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=redistribution+agreement+pdf
    • http://tuzewak.odyssey-caruso.com/uploads/1/3/1/4/131482995/vamegigimeguru-ronukogojor.pdf
    • http://files.wallstreetcrash.co.uk/uploads/1/3/2/6/132682327/dejuni.pdf
    • http://files.greenwaynurseryandrainbowclub.com/uploads/1/3/2/6/132681880/0bd51.pdf
    • http://files.green-goo.com/uploads/1/3/0/8/130874316/meges.pdf
    • https://cdn.shopify.com/s/files/1/0432/5307/2022/files/35772259061.pdf
    • https://cdn.shopify.com/s/files/1/0428/5572/7260/files/boposi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2658/6520/files/corporeal_beast_rs3.pdf
    • https://cdn.shopify.com/s/files/1/0432/9429/4171/files/14051967951.pdf
    • https://cdn.shopify.com/s/files/1/0436/6571/9449/files/back_stretches_for_pain.pdf
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/sipawajamunopuvot.pdf
    • https://cdn.shopify.com/s/files/1/0428/1162/1543/files/zozumasukus.pdf
    • https://cdn.shopify.com/s/files/1/0431/6083/0116/files/wakudupoxesibe.pdf
    • https://cdn.shopify.com/s/files/1/0437/1451/1001/files/netflix_my_list.pdf
    • https://cdn.shopify.com/s/files/1/0434/2985/5393/files/kabbale_numerologie.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/53576297116.pdf
    • https://cdn.shopify.com/s/files/1/0432/7797/5717/files/official_email_writing_tips.pdf
    • https://cdn.shopify.com/s/files/1/0430/1602/8309/files/92891617047.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_off00007310.bin
273275bdff041df0555c8e81b319db58d15acde108687f3d69af88c218631524
pdf-font-stream PDF embedded font (sfnt) at offset 0x7310 5476 bytes
font_01_sfnt_off00008593.bin
c7b50abf28b8bb1c7eccbf8863577633a45ae07369c0d56701980a245f284f96
pdf-font-stream PDF embedded font (sfnt) at offset 0x8593 6476 bytes
font_02_sfnt_off000098f1.bin
f3a56b014534a583d0fa82e9e2ea836e98fed50856008ee2153d9a46507bb453
pdf-font-stream PDF embedded font (sfnt) at offset 0x98F1 11464 bytes