Malicious PDF — malware analysis report

Static analysis result for SHA-256 36b3d939f997678c…

MALICIOUS

PDF

48.7 KB Created: 2020-08-08 21:02:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47f2beeed2ae2c9d814e903b65a0281d SHA-1: 7e9e853648ce94327cde16c81fabaaa459ac1ca0 SHA-256: 36b3d939f997678ccce93333482403308fc54a87dbdcb02e1c567c80d20da227
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL. This indicates the primary goal is to redirect the user to a malicious site, likely for further exploitation or credential harvesting. The PDF also contains a link farm heuristic, suggesting a broad distribution attempt.

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.com/pify?keyword=grammar+exercises+for+middle+school+pdf
    • http://temor.beachmusicstudio.com/uploads/1/3/2/3/132302780/1042a98.pdf
    • http://files.tierrasmith.com/uploads/1/3/1/4/131437736/8fefb202728b3e3.pdf
    • http://files.flowingriversinternationalchurch.com/uploads/1/3/1/8/131856191/xabukodoxe.pdf
    • http://pajovukor.ccyflnc.org/uploads/1/3/1/3/131380005/3003932.pdf
    • http://files.groundworkrichmond.org/uploads/1/3/1/1/131164009/0287c30c.pdf
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/towapefebe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21244882445.pdf
    • https://cdn.shopify.com/s/files/1/0431/6925/1492/files/68902445244.pdf
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/35668493786.pdf
    • https://cdn.shopify.com/s/files/1/0433/6173/0718/files/tozumipibikodanojasat.pdf
    • https://cdn.shopify.com/s/files/1/0434/0934/2621/files/dewoluwewugupebepawefad.pdf
    • https://cdn.shopify.com/s/files/1/0431/9130/4343/files/infinity_1_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0429/7264/3491/files/27160338363.pdf
    • https://cdn.shopify.com/s/files/1/0437/1418/3323/files/tapeju.pdf
    • https://cdn.shopify.com/s/files/1/0430/8955/9705/files/kapirewinewenoroj.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2335/files/66813407961.pdf
    • https://cdn.shopify.com/s/files/1/0428/1974/7996/files/xizaden.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7911/files/91568569301.pdf
    • https://cdn.shopify.com/s/files/1/0437/4138/0769/files/mipogorogebinaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/sibawobaxipovifupasos.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_off00008041.bin
0c607c94fda6f13b7f8204b113bb76f61966100af91f23f4485bcd41ec16c342
pdf-font-stream PDF embedded font (sfnt) at offset 0x8041 5492 bytes
font_01_sfnt_off000092cb.bin
e1379ccf2dc05e1b3151e323dbbedacec66d3896fe6ee5362ad31add35169471
pdf-font-stream PDF embedded font (sfnt) at offset 0x92CB 10052 bytes