Malicious PDF — malware analysis report

Static analysis result for SHA-256 616509d01a2761cd…

MALICIOUS

PDF

38.0 KB Authoring application: ImageMagick
MD5: b906b5b563046695e2bc2e22f5380f23 SHA-1: 369c191bbcd9eea4e879f9f644b13b3ab9ce7346 SHA-256: 616509d01a2761cdeff0c615627f2be3394c1c1234829f21cbf2fdda26ccd7bd
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the structure suggests a potential for JavaScript execution within the PDF to facilitate these links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://nathannegri.com/uploads/1/3/0/5/130588613/a083bcbaa8e22.pdf
    • http://mykwalk.com/uploads/1/3/0/5/130551186/8e96af2.pdf
    • http://necdm.com/uploads/1/3/0/7/130776074/ruwajawunadofevituw.pdf
    • http://new-england-marketing.com/uploads/1/3/0/5/130551922/3ef10ea.pdf
    • http://captivashop.com/uploads/1/3/0/4/130476722/taketevorilel.pdf
    • http://redcarpetfestival.com/uploads/1/3/0/4/130435774/zulowakosiligedosel.pdf
    • http://stephengilardi.com/uploads/1/3/0/5/130543366/7347325.pdf
    • http://illuminatishipped.com/uploads/1/3/0/4/130476563/a97ae9485e898e3.pdf
    • http://nabilaq.com/uploads/1/3/0/7/130775531/vowugukofot.pdf
    • http://triathlonrankings.com/uploads/1/3/0/4/130435745/fegibuputir-wirigov-zelip-purinikalixag.pdf
    • http://zoeapos.com/uploads/1/3/0/4/130476462/1119405.pdf
    • http://artbybelen.com/uploads/1/3/0/7/130739387/dewefadiratep-tinolinovejak-kokavav-nugekamasukir.pdf
    • http://abetterwaytobreathe.com/uploads/1/3/0/4/130436242/5672774.pdf
    • http://chironics.org/uploads/1/3/0/7/130775197/givunobuwef.pdf
    • http://kinderschlafland.com/uploads/1/3/0/4/130488498/jepesodimusuvot.pdf
    • http://oceanlifestyles.com/uploads/1/3/0/5/130588517/57952e29831b9.pdf
    • http://trinitykalispell.com/uploads/1/3/0/5/130588403/f9ab8d86d6.pdf
    • http://avprobuilderinc.com/uploads/1/3/0/6/130640062/3625076.pdf
    • http://resumeprices.com/uploads/1/3/0/8/130874378/aa8422c66bc7.pdf
    • http://www.sunandstars.net/uploads/1/3/0/4/130435743/130435743.html#ways+of+preventing+drug+abuse+among+youth

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003744.bin
34a4b8e1b2dd0ba49b8bcc25a763d261225f26d4a46c3508f11e5528a3b71c67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3744 7444 bytes

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