Malicious PDF — malware analysis report

Static analysis result for SHA-256 203118ff1ac76e9d…

MALICIOUS

PDF

48.3 KB Created: 2020-08-18 23:47:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57d44a283b45f0e7492da75b732cfcbc SHA-1: 72d41d755ee32c9d673c55ac8012fe37f975d610 SHA-256: 203118ff1ac76e9dbd5cb08447e999d32825621ba11855350c377b5c80e6bed5
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary heuristic indicates that the PDF links to known malicious redirector infrastructure. The document body itself contains the URL for the redirector, suggesting an attempt to lure users to malicious content.

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=understanding+calculus+problems+solutions+and+tips
    • http://kuxud.northwestbiscotti.com/uploads/1/3/1/0/131070420/0d46377.pdf
    • http://files.advancedemergencytraining.com/uploads/1/3/1/6/131606435/8654290.pdf
    • https://cdn.shopify.com/s/files/1/0428/0185/6668/files/arduino_nano_ch340_schematic.pdf
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/sojinovasedikirejepanafo.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/mamasusiponalofijejabax.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8903/files/tesanimatosevutenivak.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vonabubabosutogoxofe.pdf
    • https://cdn.shopify.com/s/files/1/0430/0449/3987/files/zoxumazot.pdf
    • https://cdn.shopify.com/s/files/1/0434/2700/4577/files/setuxedujezebanen.pdf
    • https://cdn.shopify.com/s/files/1/0429/9902/1731/files/best_free_reader_and_editor_for_ipad.pdf
    • https://cdn.shopify.com/s/files/1/0432/1116/1768/files/vafojusepojokerifubon.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_off00006490.bin
b29f9350a720d2da9dc50567d08c4a82684db1fcb28a47e3a5788345b392d808		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6490 6744 bytes
font_01_sfnt_off00007575.bin
0bb4afa021d86ff9efb5143d456002d5bca8916133efe0db579fbdb0872bffdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7575 5524 bytes
font_02_sfnt_off00008815.bin
ea29858ea1f098c8e46e4f12f7cce38f7ef6db48e5260d106fbac690c4b38243		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8815 13908 bytes

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