Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fae1604ace586b8…

MALICIOUS

PDF

100.2 KB Created: 2011-02-18 15:00:14 -06:00 Authoring application: QuickLinQs 5.0 (via PDFlib+PDI 6.0.3 (.NET/Win32))
MD5: 9f6e593ee71cf1ef69aa7a5e4eaaf5a0 SHA-1: ed850d10e8aac03e62028b624e31849ec4fcc084 SHA-256: 6fae1604ace586b8bed87a959aace0c35adaa94f8dea17da51ed74b8b7a0273d
88 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript that constructs URLs with a hardcoded referral ID '8411'. The script dynamically builds links to various websites, including 'www.innocalsolutions.com', 'www.masterflex.com', and 'www.4oakton.com', suggesting a phishing or malware distribution attempt. The presence of JavaScript actions and embedded JS streams, along with the 'IMAGE_ONLY_LURE' heuristic, indicates an attempt to obscure malicious content and entice user interaction.

Machine Learning

  • Nyx PDF Classifier clean score 0.2212

Heuristics 6

  • Secondary embedded PDF body has suspicious static findings critical POLYGLOT_CHILD_PDF_STATIC_TRIAGE
    A valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • AcroForm button with action trigger low PDF_ACROFORM_BUTTON
    PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
  • PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LURE
    PDF has 2 image XObject(s) and the content stream contains no text-emitting operators (BT/ET, Tj, TJ, ', ") in either raw bytes or decompressed streams — this is the screenshot-as-PDF pattern used to bypass text-based scanners and to deliver instructions purely through rendered pixels. It is informational unless paired with invisible links or risky URI context.
  • 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 http://www.innocalsolutions.com/default.asp?referred_id=
    • http://www.masterflex.com/index.asp?referred_id=
    • http://www.4oakton.com/?referred_id=
    • http://www
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/photoshop/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#
    • http://ns.adobe.com/exif/1.0/
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://www.coleparmer.com/index.asp?referred_id=
    • http://www.coleparmer.com/catalog/Product_view.asp?sku=
    • http://www.iec.ch

Extracted artifacts 15

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0117_000.js
5013ae210f185f324444c5503254a24d134aa01a19a7935beea1e8070519917c		 pdf-javascript-stream PDF /JS object 117 at offset 0x15EF0 81 bytes
javascript_obj0118_001.js
9921773e6c2168b7f46a7177892b4345297532400ef9a5a345d320ccb5ff0fbe		 pdf-javascript-stream PDF /JS object 118 at offset 0x15F78 64 bytes
javascript_obj0138_009.js
1cc9db1f796b7b917d04aa018f641b98354f34756789770b028d04a715605ec5		 pdf-javascript-stream PDF /JS object 138 at offset 0x1703A 2222 bytes
icc_00_off00003eb8.icc
2b3aa1645779a9e634744faf9b01e9102b0c9b88fd6deced7934df86b949af7e		 pdf-icc-profile PDF ICC profile at offset 0x3EB8 3144 bytes
font_00_cff_off0000a80b.bin
65836867d33235752061a34b64d826aca27124362f08ea90323fdd83288ff789		 pdf-font-stream PDF embedded font (cff) at offset 0xA80B 5747 bytes
font_01_cff_off0000c0d9.bin
d2a13c6fd638aaac1c8fd0c344963838978f4527df7e1cbb1277e0f1ddc98db1		 pdf-font-stream PDF embedded font (cff) at offset 0xC0D9 292 bytes
font_02_cff_off0000c9bc.bin
713a7be19eea4eaabb4b9f80e0e0500858816858c22bc2e487dc5ac18aff2651		 pdf-font-stream PDF embedded font (cff) at offset 0xC9BC 4777 bytes
font_03_cff_off0000e27c.bin
e680a0a9286cabbeae367a08b44c708d44f8626f1901c19a4a36c2d927efa5ef		 pdf-font-stream PDF embedded font (cff) at offset 0xE27C 4231 bytes
font_04_cff_off0000f588.bin
7e85a71ddeb0fb58f536a926f0f813b631025807abc9331e46d987ec55173615		 pdf-font-stream PDF embedded font (cff) at offset 0xF588 1035 bytes
font_05_cff_off00010025.bin
9fa26c8a0b7d5ffd58786d060353cbcd375171dd3048b3ede400b1d5ba94df79		 pdf-font-stream PDF embedded font (cff) at offset 0x10025 2897 bytes
font_06_cff_off00010f62.bin
fd776124236320a64071609bb71c82c8c4e75938db53e715e4997f0f02b0c4db		 pdf-font-stream PDF embedded font (cff) at offset 0x10F62 2362 bytes
font_07_cff_off00011bc7.bin
f080041b6de26528f68821ef0e01016d083642929018e9d212dcfdc4f2d96dff		 pdf-font-stream PDF embedded font (cff) at offset 0x11BC7 297 bytes
font_08_cff_off0001213c.bin
ffdeaf0c9a4306401cdf5ff311f8ea2aa9e2116b5f64c14abebf6cf0b09824a0		 pdf-font-stream PDF embedded font (cff) at offset 0x1213C 1232 bytes
font_09_cff_off00012cb2.bin
62ef2fba90bdbf913733b795e081dde74356804faea5b769afd1bddda87861f8		 pdf-font-stream PDF embedded font (cff) at offset 0x12CB2 3723 bytes
polyglot_child_pdf_off00000009.pdf
28040867a19d5fefaa2116e211d770d1ee08500e769915757101938f40b89971		 polyglot-child-pdf Secondary PDF body inside pdf container at offset 0x9 102637 bytes

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