Malicious PDF — malware analysis report

Static analysis result for SHA-256 22334b4990771607…

MALICIOUS

PDF

77.9 KB Created: 2020-08-31 22:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e665df0c376693de6eb0dec2a489446 SHA-1: 149c4e5bd405c22ac79a2944f48a19e5ddbc3e24 SHA-256: 22334b49907716070521726fa2c6e92a2293c51bfc221572c60f70410a03be9d
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, with one heuristic specifically identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that is also flagged by the redirector heuristic. This suggests the primary purpose is to lure users to malicious sites. No scripts were extracted, limiting the analysis of direct payload execution.

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=certificate+of+analysis+sample+format
    • https://static.usrfiles.com/ugd/8a419d_206789d95ac24f8085992ce014f76ba7.pdf
    • https://static.usrfiles.com/ugd/9b5f63_640e23489b1f4cefbd4d21733bbac856.pdf
    • https://static.usrfiles.com/ugd/b8c837_d10ca41e6ddb41daa1ecaa4599dce740.pdf
    • https://static.usrfiles.com/ugd/b8c837_03c0f31937d141bfbe664aea726c2791.pdf
    • https://cdn.shopify.com/s/files/1/0430/2028/8153/files/dufawuwidejob.pdf
    • https://cdn.shopify.com/s/files/1/0438/5990/2624/files/86800413402.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/jepaxavixomefu.pdf
    • https://cdn.shopify.com/s/files/1/0439/0413/9416/files/report_on_flag_making_activity.pdf
    • https://cdn.shopify.com/s/files/1/0462/7057/8850/files/99317841465.pdf
    • https://static.usrfiles.com/ugd/b8c837_05541944863e4a8cb301cb6a7e10482f.pdf
    • https://static.usrfiles.com/ugd/b8c837_bd283b680f7540edaa1e482e831b5bc9.pdf
    • https://static.usrfiles.com/ugd/b8c837_d87134b51c754a6f99a83597c7862a2f.pdf
    • https://static.usrfiles.com/ugd/906e9f_2b4fa568c3cc4ac2ad4761b6ae133ab1.pdf
    • https://static.usrfiles.com/ugd/fb5067_c1ae28afd21a47dfb38bdc5e48a9f335.pdf
    • https://static.usrfiles.com/ugd/b914b5_2db96f1e57394ce58e93b5af39378582.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab918a06946b4d48873b31213d183f3a.pdf
    • https://static.usrfiles.com/ugd/7dd30d_2422bad547b14fc2910d08ddc5757f31.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_off0000eb75.bin
85b692c1c636aed9ab1240d2a7361179fdd6c0849396a06064984f922e967b4f
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB75 2828 bytes
font_01_sfnt_off0000f56f.bin
7dc25e48f56dcd3416c47c000a66b49e41a592d40439eda32e3943857bc25dbf
pdf-font-stream PDF embedded font (sfnt) at offset 0xF56F 5168 bytes
font_02_sfnt_off000106f8.bin
d6dc795ad6f4937eda00578440342b3cce2d00586a5acf7ca3daaf53cb6bd6ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x106F8 10156 bytes