Malicious PDF — malware analysis report

Static analysis result for SHA-256 047bbcaba7ec3074…

MALICIOUS

PDF

53.1 KB Created: 2020-08-24 16:12:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb04056506dd48708fb3876f2eacefcf SHA-1: 3e03c9b168ce3355c73de867a589436a3f6827ba SHA-256: 047bbcaba7ec3074a4524ae77c7a5b19e92d5786d9d0b905153ffd0af862f294
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including a critical redirector link to 'ttraff.cc'. It also exhibits a 'Clipboard command execution lure', instructing the user to interact with command-line tools. This suggests the document is designed to trick the user into executing malicious commands, likely to download and run a secondary payload. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=github+pages+jekyll+templates
    • http://bafod.lilacinn.ca/uploads/1/3/0/7/130775734/1a2399a.pdf
    • http://files.jdalestudio.com/uploads/1/3/1/4/131406390/vuzofikedudakog-jezowoti-wexupazinunu-sagiga.pdf
    • http://rawime.sheepprogram.com/uploads/1/3/0/7/130776334/1322385.pdf
    • http://vuzumo.sinisterkiss.com/uploads/1/3/1/3/131384401/a20a7981.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rosetotirumeza.pdf
    • https://cdn.shopify.com/s/files/1/0435/4329/8207/files/53540604434.pdf
    • https://cdn.shopify.com/s/files/1/0432/6732/6112/files/portugus_para_estrangeiros_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/1630/6344/files/venerotumedunaludotu.pdf
    • https://cdn.shopify.com/s/files/1/0462/4380/7392/files/87514371684.pdf
    • https://cdn.shopify.com/s/files/1/0434/2710/2876/files/12424493254.pdf
    • https://cdn.shopify.com/s/files/1/0437/7319/8487/files/a_and_an_worksheets_for_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/panilivokujefadoko.pdf
    • https://cdn.shopify.com/s/files/1/0428/7869/7631/files/rulokojokumumivewos.pdf
    • https://cdn.shopify.com/s/files/1/0434/3280/4504/files/19742895475.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e04.bin
b89842fb464004f5a106694ed59d86221fc72eb1004f7937e795c02832a07364		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E04 5548 bytes
font_01_sfnt_off000080d2.bin
9ca15501dd3cbb0f1ed4b74f9d025a84d7ce4a14598210ea8d9206a5fb57c222		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80D2 1848 bytes
font_02_sfnt_off000089cc.bin
eceebf7f3dc76b50bd3f23da5c448ae243474bedb39f13a8256ea2aea0ebfe6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89CC 11272 bytes
font_03_sfnt_off0000b04b.bin
9301a41c00ed6f2510e22c7a7f016641a1cc79196c6cbac1bcc0780e8b1fa550		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB04B 16456 bytes

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