Malicious PDF — malware analysis report

Static analysis result for SHA-256 42f7e38b22bdfaf3…

MALICIOUS

PDF

72.1 KB Created: 2020-09-11 19:45:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 007c48358abf413fc5d036125c773b28 SHA-1: 6fc8485ff38cce9a19a8b148412b8c1a3dc7bc3d SHA-256: 42f7e38b22bdfaf34fc842b74ea3ad9b3032a0f288fc662dc9ba0dd43b7ddd6a
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL. This indicates the PDF is designed to redirect users to malicious infrastructure, likely for phishing or malware delivery. The presence of numerous other links, many hosted on Shopify, suggests a link farm for SEO poisoning or to obscure the true malicious destination.

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.com/wix?keyword=vmware+vcenter+converter+standalone+5.+1.+2
    • http://dutixenaf.cdsttgwu.com/uploads/1/3/1/4/131483281/wuvux.pdf
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/crystal_lake_mi_fishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57032902602.pdf
    • https://cdn.shopify.com/s/files/1/0461/8174/4793/files/jingle_bells_piano_sheet_music_g_major.pdf
    • https://cdn.shopify.com/s/files/1/0436/1761/6034/files/82032389556.pdf
    • https://cdn.shopify.com/s/files/1/0434/9162/3077/files/34726945336.pdf
    • https://static.usrfiles.com/ugd/a467d2_7ff4f79ac3e44420b85fa7204b168f21.pdf
    • https://static.usrfiles.com/ugd/b48b60_4a3ae12b8cc54408a4356c0e2a856e3d.pdf
    • https://static.usrfiles.com/ugd/bbd3cf_2c43601d531440498e0dc09f65ceecdb.pdf
    • https://static.usrfiles.com/ugd/fb41f9_2c442502fc394a069a0bd3a18139363f.pdf
    • https://cdn.shopify.com/s/files/1/0441/0481/0648/files/grade_1_progress_report_comments_ontario.pdf
    • https://cdn.shopify.com/s/files/1/0428/8898/6787/files/bloom_s_taxonomy_of_learning_tagalog_version.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_off0000d4e1.bin
49ebeda46f01bd60a9bcf0911046203cde758bc53ef46be4ce79a91a7e0f833a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E1 5540 bytes
font_01_sfnt_off0000e7c5.bin
9cf0b1ffcc1dd35931703c63ba88ff09775d593c7afb83c0cbcca2ce34341b19		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C5 13604 bytes

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