Malicious PDF — malware analysis report

Static analysis result for SHA-256 c263fa1449c89150…

MALICIOUS

PDF

35.3 KB Authoring application: OpenOffice Draw
MD5: ae8139da4d023a9208b268a2ab76a62a SHA-1: 8d6285de8727916739b68e6fa7e54511e616db1b SHA-256: c263fa1449c89150e5a00c2de978f657855cf5fc51fb14a175457a4804c51040
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO poisoning or to redirect users to malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The primary attack pattern involves leveraging these external links to distribute further payloads or conduct phishing operations.

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://cindybettinger.com/uploads/1/3/0/3/130313000/nifivuxobobugajelex.pdf
    • http://www.midthordlandhestesport.net/uploads/1/3/0/3/130313220/tiramisibiwef_dedadi_vafisawexara.pdf
    • http://needacable.com/uploads/1/3/0/5/130590139/4677596.pdf
    • http://crxo.com/uploads/1/3/0/5/130539131/0c86c05d8a2.pdf
    • http://drjennywang.com/uploads/1/3/0/8/130873953/lidufaxosaxukolaluve.pdf
    • http://surgenorcareers.com/uploads/1/3/0/4/130494743/gupejolezuwob_bejutupos.pdf
    • http://thesummitx.com/uploads/1/3/0/8/130874648/mepisojuso_wesob.pdf
    • http://buddyholly.org/uploads/1/3/0/8/130874329/sukavenupupesez.pdf
    • http://allnewit.com/uploads/1/3/0/6/130639554/navoru.pdf
    • http://cbbankclassic.com/uploads/1/3/0/4/130488067/dususibomemifipowop.pdf
    • http://internationalresearchlaboratories.net/uploads/1/3/0/7/130739655/53c94e36.pdf
    • http://mail.lmican.com/uploads/1/3/0/7/130776514/1e3704bd08e4c3.pdf
    • http://thekookas.com/uploads/1/3/0/6/130639307/jituritawopa_kefiziro.pdf
    • http://smartlineelectric.com/uploads/1/3/0/6/130603919/130603919.html#likert+scale+somewhat+agree

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fc7.bin
a6a01fe6be291d0f022f2d5293203da8037b3de1b5402cb0eb49f58a3216af9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC7 8400 bytes

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