Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c2c3bd1603e3b9a…

MALICIOUS

PDF

248.1 KB Created: 2010-08-15 19:06:52 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))
MD5: 3312cd8d723e7cbc9ea7d9cd3601bb99 SHA-1: 0df4c6ff186508b2985f3fc6dd98081460b5442e SHA-256: 1c2c3bd1603e3b9ac1b00aba186127f25a29805ac41a0dfba3e91c5c4340ed3a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded JavaScript that utilizes eval() and unescape() functions, indicating obfuscation. The script payload is designed to redirect the user to an external URI, specifically 'https://www.familycredit.org/debtfree/enrollment.cfm'. This behavior, combined with the ML classifier's high confidence score, suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 6

  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://www.familycredit.org/debtfree/enrollment.cfm
    • http://clarkerg.com/iuytre/znkg.php?arg=Inderal+Online
    • http://actualslimeythings.com/jydtre/tamv.php?arg=free+3rd+grade+science+energy+worksheets
    • http://clarkerg.com/iuytre/znkg.php?arg=pharmacy+controlled+subtance+florida
    • http://www.haventeens.com/wordpress/kzds.php?arg=lysine+food+group
    • http://wardrobesandkitchens.com/wordpress/kxng.php?arg=2005+nissan+key+blank
    • http://thucphamchucnangnewlife.vn/kjjhgtte/fsjq.php?arg=How+to+ferment+food
    • http://mcmireport.com/myblog/wsvc.php?arg=safe+dose+pharmacy+indianapolis
    • http://partcctv.com/jhhste/zhgk.php?arg=Ancient+etruscan+food
    • http://www.haventeens.com/wordpress/kzds.php?arg=painted+turtle+hatchling+habitats
    • http://clarkerg.com/iuytre/znkg.php?arg=celebrex+onine+pharmacy
    • http://indianpharmacynoprescription.com/products/general_health/motilium/order/
    • http://clarkerg.com/iuytre/znkg.php?arg=rite+aid+pharmacy+fredonia
    • http://www.shonstromresearch.com/hdtres/xkzp.php?arg=didrex+online+pharmacy
    • http://indianpharmacynoprescription.com/products/eye_care/cyclosporineeyedrops/order/
    • http://www.haventeens.com/wordpress/kzds.php?arg=125+x+125+web+banner+blanks
    • http://www.bionet.vn/mnbgtr/xhqy.php?arg=virtual+sex+flash
    • http://menshealthonlineshop.com/products/men_s_health/sildenafilfluoxetine/
    • http://www.gsocomatt.com/wordpress/nymq.php?arg=website+for+algebra+worksheets
    • http://www.alingua.es/kkgjte/jyvt.php?arg=dog+groomer+supply
    • http://actualslimeythings.com/jydtre/tamv.php?arg=word+meanings+using+context+clues+worksheets
    • http://www.lifewerkz.com/mnbvf/wtpc.php?arg=female+orgy
    • http://www.somethingverynew.com/home/rbhg.php?arg=daily+free+porn+site
    • http://actualslimeythings.com/jydtre/tamv.php?arg=2nd+grade+human+body+worksheets
    • http://partcctv.com/jhhste/zhgk.php?arg=Food+organization+chart
    • http://easley4dps4.com/Top/xgfh.php?arg=food+healthy+store
    • http://easley4dps4.com/Top/xgfh.php?arg=blank+2007+september+calendar
    • http://www.gsocomatt.com/wordpress/nymq.php?arg=maniac+magee+free+worksheets
    • http://www.swiftwaterfarm.com/digg/ztgp.php?arg=Chocolate+food+trends
    • http://www.bionet.vn/mnbgtr/xhqy.php?arg=male+party+hardcore
    • http://mexicanexportpharmacy.org/products/men_s_health/rockit247/order/
    • http://www.getoutofthecold.net/jsgtde/hjsm.php?arg=pharmacy+pediatric+magazines
    • http://clarkerg.com/iuytre/znkg.php?arg=natural+pharmacy+and+healthy+living
    • http://actualslimeythings.com/jydtre/tamv.php?arg=tennis+lessons+painted+desert
    • http://esark.com/lkjhg/tgny.php?arg=Kudler+fine+food+finacial
    • http://www.getoutofthecold.net/jsgtde/hjsm.php?arg=Get+Toprol-XL
    • http://www.swiftwaterfarm.com/digg/ztgp.php?arg=Valine+is+in+what+food
    • http://clarkerg.com/iuytre/znkg.php?arg=pharmacy+packaging+medications+regulations+canada
    • http://mexicanexportpharmacy.org/products/men_s_health/hardonjelly/order/
    • http://www.swiftwaterfarm.com/digg/ztgp.php?arg=Safrit+italian+food
    • http://www.haventeens.com/wordpress/kzds.php?arg=physical+science+study+guides+and+worksheets
    • http://www.gsocomatt.com/wordpress/nymq.php?arg=worksheets+on+prepositional+phrases
    • http://partcctv.com/jhhste/zhgk.php?arg=Wine+and+food+fest
    • http://www.getoutofthecold.net/jsgtde/hjsm.php?arg=Buy+Cipro
    • http://indianpharmacynoprescription.com/products/men_s_health/enhance9/order/
    • http://www.lifewerkz.com/mnbvf/wtpc.php?arg=female+orgasm+position+sexual
    • http://www.gsocomatt.com/wordpress/nymq.php?arg=elementary+4th+grade+worksheets
    • http://www.swiftwaterfarm.com/digg/ztgp.php?arg=Catholic+food+products
    • http://www.bionet.vn/mnbgtr/xhqy.php?arg=new+girlfriend
    • http://mcmireport.com/myblog/wsvc.php?arg=vitamins+pharmacy+grade
    +50 more URL(s)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000bfa0.bin
a5337ef1f5a0dfe4dc8fa6b4f3ef847a53624800b5928a0eeef5b888ceecaabc
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xBFA0 264072 bytes
embedded_pdf_script_0003df92.bin
dd9839d9d7c3bcce60393dcc8fdcd3becd31a25a1f1e2a171b85c2fc24a8e982
pdf-embedded-script PDF decompressed stream script payload at offset 0x3DF92 254048 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long hex-escaped blob(s).