Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c20217334d984fb…

MALICIOUS

PDF

49.4 KB Created: 2020-08-03 16:08:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b404d1b38e573ce7642471535aa21d0d SHA-1: 5148470aa12c71e7b7e0b2a941a689fe4b30b0a8 SHA-256: 1c20217334d984fb530dfa0a19050b6b289c016fb6bc0aeaa54ae4cde05880af
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains text suggesting a search result for a book, which is a common lure. The primary malicious URL identified is https://ttraff.cc/wb?keyword=synchronicity%20book%20carl%20jung%20pdf, which likely leads to a phishing or malware download page. The presence of numerous other PDF links also suggests a link farm or SEO poisoning tactic.

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/wb?keyword=synchronicity%20book%20carl%20jung%20pdf
    • http://files.balachittobc.com/uploads/1/3/0/7/130739204/gowogitetu.pdf
    • http://files.alphlukaupartners.com/uploads/1/3/0/7/130740589/86d5e2071a80.pdf
    • http://files.moveintomeditation.com/uploads/1/3/1/3/131398000/gubebudokokol-zatapafirew-nitatepaxom-fakajalakof.pdf
    • http://files.maostrap.com/uploads/1/3/0/7/130775556/80e6da03cb8a13.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3117/files/vuvarajimapanimamulaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2680/files/goxelefo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/babajel.pdf
    • https://cdn.shopify.com/s/files/1/0435/5037/6100/files/42148451612.pdf
    • https://cdn.shopify.com/s/files/1/0435/1423/2996/files/dugevawabenotixamukif.pdf
    • https://cdn.shopify.com/s/files/1/0432/3662/2498/files/cracked_toenail_horizontally.pdf
    • https://cdn.shopify.com/s/files/1/0440/7649/9096/files/serials_unlock_the_world.pdf
    • https://cdn.shopify.com/s/files/1/0435/8730/5629/files/ziwomebuxuxewobajelifuvek.pdf
    • https://cdn.shopify.com/s/files/1/0439/8442/1022/files/23831816904.pdf
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/laputu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6092/7393/files/drive_script.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.pdf
    • https://cdn.shopify.com/s/files/1/0435/9749/6488/files/d_d_3._5_xp_chart.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_off000081cd.bin
a2ae05acbf4c68cfb1b19c14a5555b12bc6cad363e578c25a42516d2c857967c
pdf-font-stream PDF embedded font (sfnt) at offset 0x81CD 5724 bytes
font_01_sfnt_off00009556.bin
bde5afa2ddb2f998e6c61ad82401d3e1002c061d3c850808f4a28089f9758d3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9556 10248 bytes