Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0d68ff8d7f527c2…

MALICIOUS

PDF

41.1 KB Created: 2020-08-08 13:00:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9eac2cbeb67c026c9bc2cf5fc84e7664 SHA-1: 123c560154066ba4ca2cc2963e9bcea987af415f SHA-256: e0d68ff8d7f527c2ac27cf1e454970d99553cfd50bf198c774be11d1895e8563
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to a known malicious domain. The document body, though heavily obfuscated, contains text that appears to be a book title, likely used as a lure. The primary malicious IOC is the redirector URL, which is designed to lead users to further malicious content. No scripts were extracted, limiting the analysis of the execution chain.

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=principles+of+public+international+law+by+ian+brownlie+pdf
    • http://files.jsafran.com/uploads/1/3/1/4/131452958/3dbf665a8c5.pdf
    • http://files.13moonvisions.com/uploads/1/3/1/6/131606486/7756455.pdf
    • http://files.handyplan.net/uploads/1/3/2/6/132695732/xebefiwaguti_gusadapeja_jatobozilezu_babofefodudov.pdf
    • http://files.healmylifemobile.com/uploads/1/3/1/3/131383462/jubuwegegof.pdf
    • https://cdn.shopify.com/s/files/1/0433/4007/1070/files/96939019378.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9659/files/seziwifalozevutu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/62638846632.pdf
    • https://cdn.shopify.com/s/files/1/0436/8780/5081/files/driver_san_francisco_ps3.pdf
    • https://cdn.shopify.com/s/files/1/0431/2160/6820/files/lines_written_above_tintern_abbey.pdf
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/40584909564.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/65041834153.pdf
    • https://cdn.shopify.com/s/files/1/0427/5693/1751/files/tategu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3997/1738/files/neurofibromatosis_tipo_1_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0297/files/tizagowenepaviniriwo.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_off00006142.bin
12cdc9840f1f37b04242d3ced57ef6af4548e30aeaa92a904899b67781f2c76b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6142 5484 bytes
font_01_sfnt_off0000740d.bin
13380d512ca0fb450c6cd836ed24c5619b4e99116a6fe2937ed5c44f28f1683f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x740D 10296 bytes

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